Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11535494 | Door detection system and method | James Varon | 2022-12-27 |
| 8511437 | Elevator car brake with shoes actuated by springs coupled to gear drive assembly | — | 2013-08-20 |
| 5443142 | Elevator door tampering protection system | — | 1995-08-22 |
| 5228540 | Elevator car brake with shoes actuated by springs | — | 1993-07-20 |
| 4423799 | Vehicle door lock for limiting door opening to specified vehicle positions | Herbert Glaser | 1984-01-03 |
| 4364454 | Vehicle door lock for limiting door opening to specified vehicle positions | Herbert Glaser | 1982-12-21 |