Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5864920 | Door closer for the non-fire side of a fire-door safety installation | Rex H. Lasson, William L. Downey | 1999-02-02 |
| 5709009 | Door closer for the non-fire side of a fire-door safety installation | Rex H. Lasson, William L. Downey | 1998-01-20 |
| 4440270 | Brake apparatus | — | 1984-04-03 |