Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4788742 | Torque modification apparatus for use with a door closer | David B. Edgett | 1988-12-06 |
| 4721946 | Door control device with alarm switch | — | 1988-01-26 |
| 4696500 | Doorholder assembly for a pocket door | — | 1987-09-29 |
| 4429490 | Door control switching device | — | 1984-02-07 |
| 4414703 | Door closer and holder | Raymond H. Schnarr | 1983-11-15 |
| 4386446 | Door closer | George S. Nimee | 1983-06-07 |