| Title | File Date | Issue Date | Inventor | Company | Number |
|---|---|---|---|---|---|
| Duplicate air passages in valves depending on register | 1890-06-07 | 0000-00-00 | Fontaine Besson | Besson | 457337 |
| Mouthpiece for musical instrument | 1920-05-05 | 0000-00-00 | Frank Hurtt | Hurtt | 1436631 |
| Patent Rotary action cornet | 0000-00-00 | 1854-07-04 | C. H. EISENBRANDT | Eisenbrandt | 11215 |
| Convertible saxhorn | 0000-00-00 | 1858-01-26 | C. H. EISENBRANDT | Eisenbrandt | 19187 |
| Practice Mute | 0000-00-00 | 1865-12-05 | John F Stratton | Stratton | 51363 |
| Duo-bore | 0000-00-00 | 1866-02-13 | HENRY G. LEHNERT | Lehnert | 52580 |
| Machine for making branch tubes in cornet rotary valve casings | 0000-00-00 | 1867-04-09 | L.W. SPENCER | Schreiber | 63760 |
| Machine for making branch tubes in cornet rotary valve casings | 0000-00-00 | 1867-04-16 | L.W. SPENCER | Schreiber | 63819 |
| Schreiber OTS | 0000-00-00 | 1867-05-07 | LOUIS SCHREIBER | Schreiber | 64582 |
| One piece instrument bow | 0000-00-00 | 1867-11-12 | ISAAC FISKE | Fiske | 70824 |
| Piston actuated straight line rotary valves | 0000-00-00 | 1867-11-12 | ISAAC FISKE | Fiske | 59204 |
| Inlaying Metallic Surfaces | 0000-00-00 | 1870-03-08 | EG Wright | Wright | 100580 |
| Box valves | 0000-00-00 | 1872-04-09 | BENJAMIN F. QUINBY | Quinby Bros | 125614 |
| Piston actuated triangularly arranged rotary valves | 1873-03-15 | 1873-04-29 | ISAAC FISKE | Fiske | 138389 |
| Securing top plates of rotary valves | 1873-04-09 | 1873-06-17 | GEORGE E. PARKER | Slater | 140069 |
| Piston actuated equally spaced rotary valves | 1873-06-18 | 1873-09-23 | ISAAC FISKE | Fiske | 143134 |
| Better valve windway angles and crooks replaced by quick change valve | 1873-06-18 | 1873-09-23 | ISAAC FISKE | Fiske | 74331 |
| Centennial design | 1874-05-28 | 1875-01-12 | HENRY G. LEHNERT | Lehnert | 158594 |
| Rubber cushion rim mouthpiece | 1874-12-05 | 1875-02-23 | Charles G. Conn | Conn | 160164 |
| Improved rubber rimmed mouthpiece | 0000-00-00 | 1877-05-08 | Charles G. Conn | Conn | 190558 |
| Four-in-one cornet | 1877-01-17 | 1878-01-22 | Charles G. Conn | Conn | 199516 |
| Improvements in Cornets | 1879-02-17 | 1879-04-22 | HENRY ESBACH | Boston | 214498 |
| The Blaikley compensating system | 1879-03-12 | 1879-06-17 | DAVID J. BLAIKLEY | Boosey | 216595 |
| Equa true system | 1879-09-17 | 1879-12-02 | Charles G. Conn & Dupont | Conn | 222248 |
| Modified Stoelzel valves | 1881-04-02 | 1881-11-01 | Charles G. Conn | Conn | 249012 |
| top mounted bellcrank | 0000-00-00 | 1882-10-03 | JOHN HEALD | Heald | 265498 |
| Scouring inside soldered brass horns with metal balls | 1882-10-30 | 1883-10-09 | HENRY DISTIN | Distin | 286398 |
| Instrument Case | 1882-09-23 | 1883-10-09 | HENRY DISTIN | Distin | 286399 |
| High, thumb-utilized Water key | 1883-10-13 | 1884-03-25 | JOHN HEALD | Heald | 295756 |
| 3rd valve slide straddling mouthpipe | 1889-03-17 | 1884-12-02 | HENRY DISTIN | Distin | 308655 |
| Wonder valve design | 0000-00-00 | 1886-06-15 | Charles G. Conn | Conn | 343888 |
| Connecting pipes between valves | 1886-10-30 | 1889-05-07 | Charles G. Conn | Conn | 402721 |
| Valve front position for bell up instruments | 1888-11-30 | 1889-06-18 | Charles G.Conn | Conn | 405395 |
| Interior brass tubing grinder | 1888-06-06 | 1889-08-13 | HENRY DISTIN | Distin | 408876 |
| Valve windway arrangement | 1889-03-20 | 1889-08-13 | JOHN HEALD | Heald | 408972 |
| BMIM tuning slide within key change slide | 1889-07-25 | 1889-12-17 | HENRY ESBACH | Boston | 417671 |
| Hollow Rim Mouthpiece | 1889-02-23 | 1889-12-17 | HENRY DISTIN | Distin | 417413 |
| Hollow MP walls | 1889-03-28 | 1890-01-14 | HENRY DISTIN | Distin | 419424 |
| short mouthpipe, longer bell | 1889-09-28 | 1890-04-22 | J F STRATTON | Stratton | 426398 |
| valve for pitch on tuning slide | 1890-03-03 | 1890-08-12 | JOHN HEALD | Heald | 434270 |
| Marking rod to designate pull to A | 1890-04-11 | 1890-12-16 | Charles G. Conn | Conn | 442955 |
| Spring loaded first position | 1889-10-14 | 1893-02-02 | AUGUSTE MILLE | Courtois | 468025 |
| Trigger trombone | 1894-05-18 | 1894-12-11 | FRANK A. LELAND | Leland | 530781 |
| Key specific substitute Cornet bells | 1895-02-13 | 1895-07-23 | JOHN HEALD | Heald | 543015 |
| Mouthpiece for musical instruments | 1893-04-22 | 1896-03-24 | William Leeder | Leeder | 556757 |
| Keep water from upper valve spring | 1897-10-04 | 1898-08-23 | JULIUS J. NEUMANN | Lyon $amp; Healy | 609556 |
| Slide stop rod for key change | 1898-09-14 | 1899-02-28 | JOHN HEALD | Heald | 620450 |
| Duplex Cornet | 1897-08-16 | 1899-04-11 | JULIUS J. NEUMANN | Lyon $amp; Healy | 622820 |
| No sharp bends in airway | 1900-10-20 | 1901-03-19 | FERDINAND A. BUESCHER | Buescher | 670365 |
| Conn-queror | 1900-09-27 | 1901-06-11 | Charles G. Conn | Conn | 676029 |
| Key change with push rod, pull hook, and stops | 1902-02-09 | 1903-08-18 | H. C. MARTIN | Martin | 736756 |
| Improved cushion rim mouthpiece | 1903-10-28 | 1903-12-22 | Charles G. Conn | Conn | 747591 |
| Alternate attached tubing and shank changing pitch | 1904-06-07 | 1904-09-27 | JOHN HEALD | Heald | 771012 |
| 2 bell cornet | 1901-01-19 | 1906-03-06 | Z. A. MEREDITH | Meredith | 814615 |
| Device for bending tubing | 1905-09-30 | 1906-05-01 | William J. Herr | Conn | 819545 |
| 3 mouthpipe slides- tuning, key, &H/LP (Marketed by Buescher as Multi-Pitch Tuning) | 1904-11-19 | 1906-07-17 | FERDINAND A. BUESCHER | Buescher | 826473 |
| double venturi mouthpiece | 1905-04-29 | 1906-08-21 | WILLIAM SEEFELDT | Seefeldt | 828979 |
| Valve for cornets and band instruments | 1905-03-10 | 1906-12-25 | Willard Bryant, Newell L Thoma | Bryant-Newell | 839547 |
| Improvement in 3rd valve tubing | 1905-12-04 | 1907-04-02 | Charles G. Conn | Conn | 848726 |
| Mouthpipe slides inner in direction of air travel | 1906-08-11 | 1907-06-11 | HARRY B. JAY | Jay | 856642 |
| Key changing slide | 1906-01-08 | 1907-08-06 | Charles G. Conn | Conn | 828273 |
| Increasing bell metal width (Marketed by Buescher as the Split-No-Tone bell) | 1907-07-18 | 1907-10-29 | FERDINAND A. BUESCHER | Buescher | 869619 |
| The Besson compensating system | 1904-04-29 | 1908-05-05 | T. G. EDWARDS | Besson | 886783 |
| Improved bell | 1907-04-27 | 1908-05-19 | Charles G. Conn | Conn | 887921 |
| Kazoo like mute | 1908-07-09 | 1909-02-09 | Charles G. Conn | Conn | 911940 |
| Tube Bending Device | 1908-08-08 | 1909-03-30 | EDWARD J. BUTLER | York | 916530 |
| tube bender and former | 1906-08-29 | 1909-05-18 | ISAAC S. DEMENT | York, Assigned to | 921677 |
| Valve for Cornets | 1907-08-02 | 1909-06-08 | C.G.Conn | Conn | 923812 |
| Rotary machine for steam and air | 1908-02-13 | 1909-08-17 | Charles G. Conn | Conn | 931038 |
| Movable bell-front design | 1908-02-13 | 1909-08-17 | Charles G. Conn | Conn | 931273 |
| Single port double valve | 1908-07-07 | 1909-08-17 | Charles G. Conn | Conn | 931039 |
| Alternate Slide or Valve Section for Trombone | 1907-08-14 | 1909-08-31 | FRANK HOLTON | Holton | 932704 |
| Tone Correcting Means for Brass | 1908-03-24 | 1909-09-28 | Lockhart | Lockhart | 935626 |
| Open Tone cornet | 1901-12-04 | 1909-11-09 | Z. A. MEREDITH | Meredith | 939285 |
| Slide-bearing for Trombones | 1908-07-20 | 1910-05-01 | SILAS J. SUMMERS | White | 959033 |
| Curved inner slide brace reinforcement | 1908-09-22 | 1910-05-17 | HENDERSON N. WHITE | White | 958051 |
| Cornet Mouthpiece | 1910-02-07 | 1910-06-28 | Taylor | Taylor-Horn | 962479 |
| Internal valve spring star | 1909-03-25 | 1910-07-05 | EMIL K. BLESSING | Blessing | 963272 |
| High and Low Pitch tubing loop | 1910-01-11 | 1910-07-12 | ALFRED JOHNSON | York | 963768 |
| Slide bearing surfaces | 1907-01-04 | 1910-10-04 | JOSEPH L. DE GOOD | White | 971833 |
| Slide lock | 1908-06-29 | 1910-11-29 | H. C. MARTIN | Martin | 977026 |
| Slide stockings | 1908-02-24 | 1910-12-06 | HENDERSON N. WHITE | White | 977766 |
| Key change rod limiting inward and outward travel of slide | 1910-10-31 | 1911-09-12 | HARRY B. JAY | Jay | 1003049 |
| Between valve [1st-2nd and/or 2nd-3rd] pitch and key change | 1905-06-26 | 1911-09-19 | H. C. MARTIN | Martin | 1003931 |
| New Proportion cornet | 1908-03-09 | 1911-10-17 | FRANK HOLTON | Holton | 1005972 |
| In Slide tuning | 1911-04-26 | 1912-04-02 | George E. Riblet | Riblet licensed by Olds | 1021890 |
| Valve for wind musical instrument, two tab guide of diff. width | 1911-11-20 | 1912-04-16 | William C Reid | Elkhart Musical Instrumen | 1023330 |
| 2nd version Open Tone cornet | 1906-12-12 | 1912-08-08 | Z. A. MEREDITH | Meredith | 1040372 |
| Design for Cornet Mouthpipe | 1912-06-15 | 1912-08-20 | ALFRED J. JOHNSON | York | D42919 |
| Easy playing mouthpiece | 1912-03-30 | 1913-01-14 | Charles G. Conn | Conn115 | 1050344 |
| GRBIC Brass Valves | 1912-08-19 | 1913-03-11 | EDWIN S. CONRAD | Grand Rapids | 1055445 |
| In Slide tuning | 1912-03-19 | 1913-05-06 | ROBERT MIDDLETON | Buescher | 1060779 |
| Adjustable perforated valve for key changing | 1909-12-08 | 1913-05-13 | Frederick W. Todt | Conn | 1061885 |
| Cornet Design | 1913-03-13 | 1913-05-27 | Walter French | French | D44095 |
| Incremental tubing wall thickness from mouthpiece receiver to bell | 1911-02-06 | 1913-08-26 | H. C. MARTIN | Martin | 1071526 |
| Continuously Conical Bore | 1912-09-03 | 1913-09-23 | ERNST ALBERT COUTURIER | Couturier | 1073593 |
| AL-TRU Cornet Layout | 1913-05-05 | 1913-12-30 | ALFRED J. JOHNSON | York | D45091 |
| MOUTHPIECE | 1913-09-29 | 1914-03-10 | CHARLES E. STAGY | Holton | 1089876 |
| Ornamental design for cornet (26A) | 1914-02-21 | 1914-04-07 | Charles G. Conn | Conn | D45555 |
| Busch Patent for adjustable mouthpiece | 1912-02-08 | 1914-05-05 | FREDERICK BUSCH | Busch | 1095188 |
| Asymetric cornet valve | 1913-11-11 | 1914-09-29 | Charles G. Conn | Conn | 1112120 |
| New Proportion Cornet design | 1914-02-09 | 1914-10-06 | FRANK HOLTON | Holton | D46501 |
| Rotary valve action for piston valves | 1913-11-06 | 1914-10-06 | James H Gardner | Conn | 1112444 |
| Removeable mouthpipe for High and Low Pitch Filing date: Jul 21, 1914 | 0000-00-00 | 1915-05-11 | MARK J. KALASHEN | Kalashen | 1139297 |
| CORNET DESIGN | 1915-03-11 | 1915-12-21 | WILLIAM E. HIGGINS | Holton | D48319 |
| Reversed mouthpipe slide | 1912-03-21 | 1915-12-21 | CARL L. W. NELSON | Vega | 1165278 |
| Reducing Valves to two ports each | 1914-10-31 | 1916-04-04 | William Seidel | SeidelW | 1178030 |
| Quick Change Vavlve | 1914-06-08 | 1916-08-29 | Walter French | French | 1196097 |
| Quick pitch change | 1915-03-22 | 1916-09-05 | Parduba | Parduba | 1197058 |
| Brass Wind Instrument | 1913-04-24 | 1916-12-05 | WILLIAM C. KIDDER | White | 1206858 |
| Bell tuning | 1913-02-10 | 1917-02-06 | HENDERSON N. WHITE | White | 1214625 |
| Extending valve slide when tuning slide is drawn | 1914-11-03 | 1917-03-06 | Charles G. Conn | Conn | 1218057 |
| Telescoping mouthpipe | 1915-03-12 | 1917-07-03 | CARL L. W. NELSON | Vega | 1232069 |
| Trombone Counterbalances | 1916-01-31 | 1917-08-07 | FRANK HOLTON | Holton | 1236173 |
| Micro tuning mechanism (80A) | 1914-10-08 | 1917-09-08 | Charles G. Conn | Conn | 1240177 |
| Valve surface area removed | 1917-02-03 | 1918-04-16 | DAVID A. MCDONALD | Lyon $amp; Healy | 1263084 |
| CORNET design | 1918-04-27 | 1918-07-23 | ERNST ALBERT COUTURIER | Couturier | D52207 |
| Graduated, stepped tuning slide | 1915-03-01 | 1918-08-27 | HENDERSON N. WHITE | White | 1277012 |
| King Master tuning | 1915-05-06 | 1918-08-27 | HENDERSON N. WHITE | White | 1277013 |
| TRUMPET design | 1918-04-27 | 1918-09-24 | ERNST ALBERT COUTURIER | Couturier | D52473 |
| Trumpet tuning | 1919-01-25 | 1920-02-17 | FRANK HOLTON | Holton | 1330806 |
| Slide stocking design | 1917-02-17 | 1920-02-17 | Wm D. ACKLEY | Holton | 1330831 |
| Die for making valve casings for instruments | 1918-10-28 | 1920-07-06 | Edward J. Gulick | Conn | 1345921 |
| MOUTHPIECE FOR MUSICAL INSTRUMENTS design | 1919-05-03 | 1921-04-12 | ERNST ALBERT COUTURIER | Couturier | D57511 |
| Conical bore trombone slides | 1919-06-25 | 1921-07-19 | ERNST ALBERT COUTURIER | Couturier | 1385202 |
| Apparatus for calibrating and justifying parts of wind musical instruments | 1919-06-02 | 1921-08-30 | Edward J. Gulick | Conn | 1389348 |
| Valve casing for a horn | 1921-05-23 | 1921-08-30 | Edward J. Gulick | Conn | D58226 |
| Double horn | 1921-05-24 | 1921-08-30 | O. Dotson | Conn | D58727 |
| Cork ringed mute | 1921-05-14 | 1922-08-08 | ERNST ALBERT COUTURIER | Couturier | 1425318 |
| Manual disk valve | 1921-05-14 | 1922-11-21 | ERNST ALBERT COUTURIER | Couturier | 1436085 |
| Short mouthpipe/smaller valve bore | 1921-09-12 | 1922-12-12 | ERNST ALBERT COUTURIER | Couturier | 1438363 |
| Short travel valves (Used by Holton) | 1921-10-24 | 1923-06-05 | Alson F Fairchild | (Used by Holton) | 1457623A |
| Trumpet tuning | 1921-07-23 | 1924-10-21 | WILLIAM E. HIGGINS | Holton | 1512023 |
| Piston valve star design | 1923-07-30 | 1925-07-28 | PETER TOTTLE | Vega | 1547272 |
| Method of Electroplating Musical Istruments | 1925-02-03 | 1925-08-04 | CHARLES BELOUS | Bruno | 1548432 |
| Knob position machine | 1922-11-11 | 1925-10-27 | Edward J. Gulick | Conn | 1559164 |
| Milling machine for cross knobs for musical instruments | 1922-11-01 | 1925-12-22 | Edward J. Gulick | Conn | 1567005 |
| Knob gauging machine | 1922-11-06 | 1925-12-22 | Edward J. Gulick | Conn | 1567005 |
| Milling machine for musical instrument knobs | 1922-10-30 | 1926-04-27 | Edward J. Gulick | Conn | 1582870 |
| Duplication of airway for smaller bore/shorter piston stroke | 1925-05-09 | 1926-09-28 | FERDINAND A. BUESCHER | Buescher | 1601555 |
| Upside-down adjustable bell-front | 1933-06-13 | 1927-04-05 | JOHN HEALD | Heald | 1634355 |
| slide tuning | 1925-01-21 | 1927-04-12 | FERDINAND A. BUESCHER | Buescher | 1624310 |
| Removeable slide bearings | 1926-10-27 | 1927-10-25 | FERDINAND A. BUESCHER | Buescher | 1647079 |
| Trombone counter weight | 1924-02-18 | 1927-10-25 | Edward D. Coe | Conn | 1647102 |
| Slide Tuning for 'American Model' Trombone | 1924-05-05 | 1927-12-13 | FRANK HOLTON | Holton | 1652306 |
| Slide Trombone configuration for bracing and adjustment mechanism for tuning-in-slide trombones | 1925-12-29 | 1928-02-28 | EARL WILLIAMS | Williams | 1661147 |
| Internal Spring and Key | 1927-03-13 | 1928-06-19 | ALFRED J. JOHNSON | York | 1674398 |
| Improved large horn bell (sousaphone) | 1926-04-03 | 1928-09-18 | Edward J. Gulick | Conn | 1684392 |
| Improved rotation prevention for valves | 1927-12-12 | 1929-06-11 | Iddo E. Carlson | Conn | 1716917 |
| Method for manufacture of musical instrument bells | 1928-02-17 | 1929-08-13 | Edward J. Gulick | Conn | 1724280 |
| Stepped increases in tubing | 1928-06-26 | 1929-09-24 | ERNST ALBERT COUTURIER | Couturier | 1729568 |
| Visible embouchure mouthpiece | 1927-03-24 | 1929-12-17 | Edward J. Gulick | Conn | 1740013 |
| Horn reinforcing means (sousaphone) | 1928-10-18 | 1929-12-17 | Edward J. Gulick | Conn | 1739791 |
| Trombone Slide Improvements | 1929-08-05 | 1930-01-20 | ALFRED J. JOHNSON | York | 1789589 |
| Internal slide High and Low Pitch stops | 1923-05-15 | 1930-01-21 | EMIL K. BLESSING | Blessing | 1744519 |
| Tuning slide actuating mechanism (triggered 3rd slide finger ring) | 1928-07-19 | 1930-05-20 | Edward J. Gulick | Conn | 1759824 |
| Method for manufacture of curved and bent metal tubes | 1928-06-29 | 1930-06-10 | Edward J. Gulick | Conn | 1763582 |
| Cushion for sousaphone on shoulder | 1929-02-15 | 1930-06-10 | Edward J. Gulick | Conn | 1762577 |
| Method and means for shaping tubes | 1928-02-08 | 1930-06-17 | Edward J. Gulick | Conn | 1764561 |
| One hand actuating of key changing valve | 1928-07-19 | 1930-06-17 | Edward J. Gulick | Conn | 1764562 |
| Hand-Adapted Trombone Brace | 1928-01-04 | 1930-11-25 | EARL WILLIAMS | Williams | 1782452 |
| Trombone Counterbalance | 1929-05-10 | 1931-06-16 | HARPER A. REYNOLDS | White | 1810086 |
| Large external spring on valve | 1930-03-26 | 1931-09-01 | Reginald B. Olds | Olds | 1821397 |
| Piston Valve Structure | 1929-08-26 | 1931-09-01 | ALFRED J. JOHNSON | York | 1821641 |
| Lighter weight sousaphone | 1930-05-06 | 1931-09-08 | Edward J. Gulick | Conn | 1822025 |
| Changing key on a bugle | 1930-09-18 | 1931-12-22 | Philip J. Burkle | Conn | 1837201 |
| Tunable, extendable mute | 1930-07-30 | 1932-04-26 | LORENZO SANSONE | Sansone | 1855423 |
| Valve Structure | 1931-09-26 | 1933-08-15 | Alfred J. Johnson | York | 1922685 |
| Valves Flatten port (Used by Holton) | 1932-11-12 | 1933-10-31 | Fred Kull | (Used by Holton) | 1932742A |
| Offset inner slides | 1932-09-30 | 1934-03-13 | Otis E. Beers | Buescher | 1951267 |
| Double Cup Mouthpiece for brasswind | 1933-12-13 | 1935-10-29 | John Parduba | Parduba | 2018738 |
| Stationary inner slide tube for trombone | 1935-04-11 | 1935-11-19 | Reginald B. Olds | Olds | 2021323 |
| Reduction of Slide Wear | 1934-03-22 | 1936-01-07 | FRANK HOLTON | Holton | 2027340 |
| Improved friction reduction | 1936-09-01 | 1938-01-25 | Reginald B. Olds | Olds | 2106327 |
| Curved and inclined braces | 1937-05-17 | 1938-04-05 | Otis E. Beers | Buescher | 2113502 |
| Design for a trombone | 1938-02-17 | 1938-07-12 | Reginald B. Olds | Olds | D110493 |
| Strengthen valve block and eliminate braces and connections | 1937-02-13 | 1938-10-04 | E. B. TODT | Buescher | 2132329 |
| Valve casing construction | 1937-07-10 | 1939-11-28 | Henri Selmer | Selmer | 2181346 |
| York Airflow design | 1939-11-24 | 1940-04-02 | ALFRED J. JOHNSON | York | D119755 |
| Mute | 1940-08-01 | 1941-06-03 | TM Koeder | Koeder | 2244205 |
| Mouthpiece Puller | 1940-10-11 | 1941-08-19 | JOSEPHUS THOMPSON | Grossman | 2253411 |
| Hollowed-out bearing surfaces | 1941-01-18 | 1941-10-28 | Reginald B. Olds | Olds | 2260723 |
| Bakelite Trumpet | 1941-06-19 | 1943-05-25 | JOSEPHUS THOMPSON | Grossman | 2320202 |
| Improvements to Bakelite Trumpet | 1942-05-22 | 1943-05-25 | JOSEPHUS THOMPSON | Grossman | 2320203 |
| Waterkey | 0000-00-00 | 1948-04-20 | EARL WILLIAMS | Williams | 2439997 |
| Side mounted trombone water key | 1947-12-13 | 1950-12-12 | Fred N. Meyers | White | 2533388 |
| Piston top outer spring | 0000-00-00 | 1952-10-07 | Fred N. Meyers | White | 2612811 |
| Valve or piston mechanism | 1950-03-23 | 1954-01-12 | Wohlrab | Wohlrab | 2665606 |
| Piston/axial rotary valve | 1953-10-02 | 1957-06-04 | Z. A. MEREDITH | Meredith | 2794358 |
| Attachment for the mouthpiece of musical instruments | 1955-02-08 | 1958-04-15 | Harrison H SaylorIvan C Kay | Kay | 2830483 |
| Slant-Rotor Tuba With Alterable 4th Valve Interval | 1969-11-21 | 1972-08-29 | Fred J. Marzan | Marzan | 3686995 |