| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 29 |
| # | Industry | |
|---|---|---|
| #1 | Basic communication technologies | |
| #2 | Electrical machinery and energy | |
| #3 | Audio-visual technology | |
| #4 | Machines | |
| #5 | Telecommunications |
| # | Technology | |
|---|---|---|
| #1 | Tuning resonant circuits | |
| #2 | Loudspeakers and microphones | |
| #3 | Magnets and transformers | |
| #4 | Unspecified technologies | |
| #5 | Transmission | |
| #6 | Resonators | |
| #7 | Capacitors and switching devices | |
| #8 | Unspecified technologies | |
| #9 | Amplification control | |
| #10 | Resistors |
| # | Name | Total Patents |
|---|---|---|
| #1 | Marvel Orin E | 8 |
| #2 | Seabert John D | 5 |
| #3 | Gaubert John Q | 4 |
| #4 | Brump Herbert L | 3 |
| #5 | Newill Edward B | 3 |
| #6 | Emmert Rodger J | 1 |
| #7 | Dybvig Henry G | 1 |
| #8 | Brown Newill Edward | 1 |
| #9 | Forsythe James B | 1 |
| #10 | Haben Warner M | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1912757A | Tuning mechanism | |
| US1897253A | Radio coil and shield mounting | |
| US1913111A | Control drive for variable condensers | |
| US1889781A | Variable condenser drive for radio apparatus | |
| US1904199A | Inductance | |
| US1844804A | Support for diaphragm transformers | |
| US1902158A | Automatic phonograph | |
| US1893618A | Coupling device | |
| US2015425A | Radio control | |
| US1913544A | Electrical apparatus | |
| US1844787A | Cone type speaker | |
| US1844803A | Acoustic device | |
| US1844802A | Loud speaker adapted for automobile use | |
| US1844519A | Electrical apparatus | |
| US1885621A | Electrical apparatus | |
| US1844605A | Acoustic device | |
| US1885596A | Electrical apparatus | |
| US1904422A | Electrical apparatus | |
| US1877254A | Sheet material | |
| US1836490A | Radio control |