| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 19 | |
| #2 | Canada | 4 | |
| #3 | United Kingdom | 2 | |
| #4 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Telecommunications | |
| #3 | Audio-visual technology | |
| #4 | Machines | |
| #5 | Mechanical elements | |
| #6 | Consumer goods |
| # | Name | Total Patents |
|---|---|---|
| #1 | Warnke Herbert R | 11 |
| #2 | Barry Leon G | 6 |
| #3 | Cleaveland Le Roy A | 2 |
| #4 | Carter Charles W | 2 |
| #5 | Tooker Frank H | 2 |
| #6 | Turnbull Arthur Jr | 1 |
| #7 | Warnke Robert | 1 |
| #8 | Coliz James T | 1 |
| #9 | Turnbull Jr Arthur | 1 |
| #10 | Cleaveland Leroy A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3135896A | Narrow band sensing circuit | |
| US2924671A | Handset holders | |
| US2692380A | Ringer | |
| US2709734A | Electric contact arc-suppressing rotary snap switches | |
| US2699478A | Electric relay | |
| US2588793A | Rotary selector switch | |
| US2579169A | Indexing mechanism | |
| US2694756A | Rotary switch | |
| US2577225A | Rotary switch | |
| US2502824A | Signaling device for sound powered telephone systems | |
| US2496376A | Interrupter | |
| US2434251A | Telephone headband | |
| US2503857A | Polarized electromagnet for telephone instruments | |
| US2411014A | Terminal block | |
| US2411013A | Rotary selector switch | |
| GB543945A | Improvements in alternating current generators | |
| US2263373A | Signal generator | |
| US2223927A | Call indicator | |
| US2223926A | Automatic reset switch | |
| US2245511A | Telephone instrument |