| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 | |
| #2 | Canada | 7 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Audio-visual technology | |
| #3 | Basic communication technologies | |
| #4 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Carter Alva J | 14 |
| #2 | Carter Alva John | 4 |
| #3 | Yaxley Ernest E | 1 |
| #4 | Smith Waldorf A | 1 |
| #5 | Doran Leroy O | 1 |
| #6 | Leffler Ralph H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1796155A | Electrostatic reproducer | |
| US1883624A | Constant line and speaker impedance volume control | |
| US1893613A | Switch | |
| US1755314A | Rheostat and potentiometer | |
| US1726692A | Radioplug | |
| US1723132A | Condenser | |
| US1650008A | Rheostat | |
| US1620755A | Jack | |
| US1649990A | Variable high resistance and method of making same | |
| US1668583A | Plug | |
| US1624038A | Rheostat | |
| US1587696A | Electrostatic condenser | |
| US1635256A | Terminal connecter | |
| US1527458A | Electric switch | |
| US1553801A | Cord plug or connecter | |
| CA270337A | Plug | |
| CA247126A | Electrostatic condenser | |
| CA266919A | Rheostat | |
| CA268096A | Radio jack | |
| CA244203A | Circuit continuing device |