| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Machines | |
| #3 | Electrical machinery and energy | |
| #4 | Audio-visual technology | |
| #5 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Coin-freed | |
| #2 | Unspecified technologies | |
| #3 | Electric switches | |
| #4 | Special information storage | |
| #5 | Household appliances | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Henry Earle G | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US2489577A | Coin-controlled system | |
| US2489576A | Multiple plunger selector system | |
| US2398637A | Timer | |
| US2476865A | Phonograph record changer | |
| US2405923A | Mercury switch relay | |
| US2348434A | Coin-controlled selector | |
| US2287682A | Combination switch and record selector | |
| US2281435A | Control system for automatic phonographs | |
| US2297652A | Selective switch and mounting therefor | |
| US2260992A | Coin operated switch | |
| US2286544A | Wall box | |
| US2255216A | Electromagnetic record-selecting control means | |
| US2219257A | Wall box |