Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D290442 | Electronic door lock | Richard J. Ohno | 1987-06-23 |
| D288899 | Magnetic card-operated electronic door lock | Richard J. Ohno | 1987-03-24 |
| 4384738 | Exit device with lock down mechanism | — | 1983-05-24 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D290442 | Electronic door lock | Richard J. Ohno | 1987-06-23 |
| D288899 | Magnetic card-operated electronic door lock | Richard J. Ohno | 1987-03-24 |
| 4384738 | Exit device with lock down mechanism | — | 1983-05-24 |