Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6718694 | Drive nut assembly for a door operator | Erich Stephen | 2004-04-13 |
| 6712406 | Lock latch mechanism for transit vehicle door system | — | 2004-03-30 |
| 6708449 | Two motor arrangement for a door operator | — | 2004-03-23 |
| 6688042 | Central lock mechanism | Philip J. Calamatas | 2004-02-10 |