Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8544896 | Stop device for preventing opening of deformed door | — | 2013-10-01 |
| 7533551 | Door lock with key cylinder | — | 2009-05-19 |
| 6892625 | Double rod end cylinder with split ring coupling | Donald Blackman, Alex Tyutyunik | 2005-05-17 |
| 4635536 | Cylinder locking apparatus | John F. Bowbin, Raymond L. Ghislain, Stephen K. McDaniel | 1987-01-13 |