This is a (partial) list of patents that were assigned to the C.G. Conn company between 1876 and 1969. The "Category" column in the table below is my own addition to make it a bit easier to look things up. The "Date Filed" and "Date Granted" columns are in the format YYYY-MM-DD. The patent numbers are of the United States Patent Office (USPTO). This list is sorted by date the patent was filed. This means that the "date granted" and the patent numbers are sometimes out of sequence.
| Conn Patents (partial) | |||||
| Date Filed | Date Granted | Patent Number | Applicant | Category | Purpose |
|---|---|---|---|---|---|
| - | - | - | - | - | - |
| 1867-06-09 | 1888-01-17 | 376648 | W.J. Gronert Charles G. Conn |
Other | Music folio with music holders |
| 1874-12-05 | 1875-02-23 | 160164 | Charles G. Conn | Brass | Rubber cushion rim mouthpiece |
| - | 1877-05-08 | 190558 | Charles G. Conn | Brass | Improved rubber rimmed mouthpiece |
| 1877-01-17 | 1878-01-22 | 199516 | - | Brass | Four-in-one cornet |
| 1879-09-17 | 1879-12-02 | 222248 | Charles G. Conn & Dupont | Brass | Equa true system |
| 1881-04-02 | 1881-11-01 | 249012 | Charles G. Conn | Brass | Modified Stoelzel valves |
| - | 1886-06-15 | 343888 | Charles G. Conn | Brass | Wonder valve design |
| 1886-10-30 | 1889-05-07 | 402721 | Charles G. Conn | Brass | Connecting pipes between valves |
| 1888-11-30 | 1889-06-18 | 405395 | Charles G.Conn | Brass | Valve front position for bell up instruments |
| 1889-05-23 | 1889-08-27 | 410072 | Charles G. Conn | Woodwind | Metal clarinet |
| 1890-04-11 | 1890-12-16 | 442955 | Charles G. Conn | Brass | Marking rod to designate pull to A |
| 1896-04-24 | 1897-05-25 | 583077 | Guiseppe Oliveri | - | Tuning attachment for wind instruments |
| 1898-06-01 | 1899-05-02 | 624301 | Charles G. Conn | Other | Graphophone |
| 1900-05-05 | 1901-01-29 | 667065 | W.V. Pezzoni | Other | Portable organ |
| 1900-09-27 | 1901-06-11 | 676029 | Charles G. Conn | Brass | Conn-queror |
| 1902-04-05 | 1903-12-01 | 745788 | Charles G. Conn | Brass | Perfected Connqueror design |
| 1903-10-24 | 1904-03-29 | 755610 | Harry A Bower | Drums | Drum snare adjust mechanism |
| 1903-10-28 | 1903-12-22 | 747591 | Charles G. Conn | Brass | Improved cushion rim mouthpiece |
| 1905-09-30 | 1906-05-01 | 819545 | William J. Herr | Mechanical | Device for bending tubing |
| 1905-10-23 | 1906-07-24 | 826543 | Charles G. Conn | Other | Lubricator |
| 1905-12-04 | 1907-04-02 | 848726 | Charles G. Conn | Brass | Improvement in 3rd valve tubing |
| 1906-01-08 | 1907-08-06 | 828273 | Charles G. Conn | Brass | Key changing slide |
| 1906-03-23 | 1906-10-16 | 833706 | Charles G. Conn | Drums | Drum and cymbal beater |
| 1907-04-27 | 1908-05-19 | 887921 | Charles G. Conn | Brass | Improved bell |
| 1907-08-02 | 1908-11-30 | 903059 | Charles G. Conn | Other | Improved gramophone bell |
| 1908-02-13 | 1909-08-17 | 931038 | Charles G. Conn | Other | Rotary machine for steam and air |
| 1908-02-13 | 1909-08-17 | 931273 | Charles G. Conn | Brass | Movable bell-front design |
| 1908-07-07 | 1909-08-17 | 931039 | Charles G. Conn | Brass | Single port double valve |
| 1908-07-09 | 1909-02-09 | 911940 | Charles G. Conn | Brass | Kazoo like mute |
| 1909-12-08 | 1913-05-13 | 1061885 | Frederick W. Todt | Brass | Adjustable perforated valve for key changing |
| 1912-03-30 | 1913-01-14 | 1050344 | Charles G. Conn | Brass | Easy playing mouthpiece |
| 1912-12-14 | 1915-12-29 | 1166046 | Charles G. Conn | Woodwind | Alternate key |
| 1913-10-22 | 1916-01-04 | 1166971 | Charles G. Conn | - | Heckelphone |
| 1913-11-06 | 1914-10-06 | 1112444 | James H Gardner | Brass | Rotary valve action for piston valves |
| 1913-11-11 | 1914-09-29 | 1112120 | Charles G. Conn | Brass | Asymetric cornet valve |
| 1914-02-21 | 1914-04-07 | D45555 | Charles G. Conn | Brass | Ornamental design for cornet (26A) |
| 1914-05-08 | 1915-09-15 | 1153489 | P.C. Hardy | Woodwind | Process of making key seats on wind instruments |
| 1914-10-08 | 1917-09-08 | 1240177 | Charles G. Conn | Brass | Micro tuning mechanism (80A) |
| 1914-11-03 | 1917-03-06 | 1218057 | Charles G. Conn | Brass | Extending valve slide when tuning slide is drawn |
| 1915-04-22 | 1917-07-10 | 1232823 | George A. Manning | Drums | Dampening drum head |
| 1915-06-08 | 1917-04-24 | 1223563 | Charles G Conn | Woodwind | Separately formed woodwind key seats |
| 1915-12-08 | 1917-06-19 | 1230192 | George A. Manning | Drums | Drum trap holder |
| 1918-02-20 | 1919-07-08 | 1308903 | Edward J. Gulick | Woodwind | Tuning device for saxophone |
| 1918-08-21 | 1920-07-06 | 1345486 | Edward J. Gulick | Woodwind | Key mount for saxophones |
| 1918-10-28 | 1920-07-06 | 1345921 | Edward J. Gulick | Mechanical | Die for making valve casings for instruments |
| 1919-06-02 | 1921-08-30 | 1389348 | Edward J. Gulick | Mechanical | Apparatus for calibrating and justifying parts of wind musical instruments |
| 1921-01-13 | 1921-06-28 | D58226 | Edward J. Gulick | Brass | Valve casing for a horn |
| 1921-03-12 | 1925-12-22 | 1567003 | Edward J. Gulick | Woodwind | Key shaft bearings for saxophone |
| 1921-05-23 | 1921-08-30 | D58727 | O. Dotson | Brass | Double horn |
| 1922-06-02 | 1924-03-25 | 1499240 | Edward J. Gulick | Other | Ornamentally engraved metal and method of producing |
| 1922-10-19 | 1925-04-21 | 1534520 | Edward J. Gulick | Mechanical | Machine for forming sockets on woodwinds |
| 1922-10-30 | 1926-04-27 | 1582870 | Edward J. Gulick | Mechanical | Milling machine for musical instrument knobs |
| 1922-11-01 | 1925-12-22 | 1567004 | Edward J. Gulick | Mechanical | Milling machine for cross knobs for musical instruments |
| 1922-11-06 | 1925-12-22 | 1567005 | Edward J. Gulick | Mechanical | Knob gauging machine |
| 1922-11-11 | 1925-10-27 | 1559164 | Edward J. Gulick | Mechanical | Knob position machine |
| 1923-10-11 | 1929-11-26 | 1736880 | Edward J. Gulick | Woodwind | Saxophone microtuner |
| 1923-12-21 | 1925-03-10 | 1539430 | Edward J. Gulick | Mechanical | Tool for rolling the edge of wind musical instrument valve seat (woodwind) |
| 1924-02-18 | 1927-10-25 | 1647102 | Edward D. Coe | Brass | Trombone counter weight |
| 1925-10-22 | 1928-09-25 | 1685123 | Samuel A. Click | Other | Musical instrument case for clarinet |
| 1926-04-03 | 1928-09-18 | 1684392 | Edward J. Gulick | Brass | Improved large horn bell (sousaphone) |
| 1926-04-12 | 1927-08-09 | 1638808 | Edward J. Gulick | Woodwind | Tampion pad (saxophone) |
| 1927-03-24 | 1929-12-17 | 1740013 | Edward J. Gulick | Brass | Visible embouchure mouthpiece |
| 1927-07-11 | 1930-02-11 | 1747113 | Edward J. Gulick | Woodwind | Key pad (saxophone) |
| 1927-12-12 | 1929-06-11 | 1716917 | Iddo E. Carlson | Brass | Improved rotation prevention for valves |
| 1928-02-08 | 1930-06-17 | 1764561 | Edward J. Gulick | Mechanical | Method and means for shaping tubes |
| 1928-02-17 | 1929-08-13 | 1724280 | Edward J. Gulick | Mechanical | Method for manufacture of musical instrument bells |
| 1928-06-29 | 1930-06-10 | 1763582 | Edward J. Gulick | Mechanical | Method for manufacture of curved and bent metal tubes |
| 1928-07-19 | 1930-05-20 | 1759824 | Edward J. Gulick | Brass | Tuning slide actuating mechanism (triggered 3rd slide finger ring) |
| 1928-07-19 | 1930-06-17 | 1764562 | Edward J. Gulick | Brass | One hand actuating of key changing valve |
| 1928-10-12 | 1931-06-09 | 1809380 | Edward J. Gulick | Woodwind | Method of manufacture (clarinet) |
| 1928-10-18 | 1929-12-17 | 1739791 | Edward J. Gulick | Brass | Horn reinforcing means (sousaphone) |
| 1929-02-15 | 1930-06-10 | 1762577 | Edward J. Gulick | Brass | Cushion for sousaphone on shoulder |
| 1929-07-10 | 1931-06-12 | 1805449 | Edward J. Gulick | Woodwind | Improved tone opening socket for clarinet |
| 1929-10-11 | 1929-11-26 | 1736880 | Edward J. Gulick | Woodwind | Saxophone microtuner |
| 1930-03-31 | 1931-12-22 | 1837823 | Allen Loomis | Woodwind | Key mechanism Boehm clarinet |
| 1930-05-06 | 1931-09-08 | 1822025 | Edward J. Gulick | Brass | Lighter weight sousaphone |
| 1930-05-17 | 1931-09-01 | 1821655 | Allen Loomis | Woodwind | Tuning device clarinets |
| 1903-05-17 | 1931-12-22 | 1837227 | Allen Loomis | Woodwind | Tuning device clarinets |
| 1930-09-18 | 1931-12-22 | 1837201 | Philip J. Burkle | Brass | Changing key on a bugle |
| 1930-10-06 | 1931-11-03 | 1830025 | Edward J. Gulick | Woodwind | Saxophone key pad |
| 1930-11-15 | 1933-11-28 | 1937025 | Allen Loomis | Woodwind | Thumb hook (saxophone) |
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