Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5590917 | High security push-to-exit pedestrian door control | Thomas R. Clark, Kun Hong Kim, James W. Overbey | 1997-01-07 |
| 5511401 | Lock bolt and deadbolt interconnection mechanism | Thomas R. Clark, Donald H. Schmidt | 1996-04-30 |
| D366822 | Electronic combination lock housing | Thomas R. Clark, Pamela K. Phillips | 1996-02-06 |