| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 18 | |
| #2 | Canada | 7 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Audio-visual technology | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Special musical instruments | |
| #2 | Loudspeakers and microphones | |
| #3 | Rotary pistons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Conn Charles G | 25 |
| #2 | Pezzoni William V | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1223563A | Key-seat for wind musical instruments. | |
| US1218057A | Cornet. | |
| US1240177A | Cornet. | |
| US1112120A | Cornet-valve. | |
| US1166971A | Reed musical instrument. | |
| US1050344A | Mouthpiece for cornets. | |
| US911940A | Bell-mute for cornets. | |
| US931039A | Rotary valve for wind musical instruments. | |
| CA113436A | Rotary machine | |
| CA118651A | Brass wind musical instrument | |
| US931273A | Brass wind musical instrument. | |
| US931038A | Rotary machine. | |
| US903059A | Sound-reproducing bell. | |
| US923812A | Valve for cornets. | |
| US887921A | Brass wind instrument. | |
| US833706A | Drum and cymbal beater. | |
| US848726A | Valved wind musical instrument. | |
| US747591A | Cornet-mouthpiece. | |
| CA86098A | Cornet | |
| US745788A | Cornet. |