Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4807102 | Alternating current electrical power supply circuit | — | 1989-02-21 |
| 4400594 | Control keyboard for electric or electronic devices | — | 1983-08-23 |
| 4354081 | Push-button or keyboard with depressable keys | — | 1982-10-12 |
| 4303856 | Control push-button device for switching an electronic or electric circuit | — | 1981-12-01 |
| 4288787 | Control keyboard with switches of mechanical constructions | — | 1981-09-08 |
| 4203013 | Alphanumeric control keyboard with depressible keys for electric or electronic machines | — | 1980-05-13 |