Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5517720 | Cushion device for door closer assembly | Thomas A. Anderson, Jon C. Nye | 1996-05-21 |
| 4852919 | Door magnet improvement | Andrew Current | 1989-08-01 |
| 4386446 | Door closer | Richard L. Zunkel | 1983-06-07 |