Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6508332 | Elevator car door locking and unlocking mechanism | Richard L. Fahl, Mark T. Davidson, Takeshi Sugimoto | 2003-01-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6508332 | Elevator car door locking and unlocking mechanism | Richard L. Fahl, Mark T. Davidson, Takeshi Sugimoto | 2003-01-21 |