Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4709445 | Method and apparatus for closing a door | Cardell E. Miller | 1987-12-01 |
| 4570985 | Locking apparatus for use with a panel slideable in a plane | Cardell E. Miller, Louis D. Huot, George L. Engstrom | 1986-02-18 |
| 4438544 | Looped rod safety stop | Cardel E. Miller | 1984-03-27 |
| 4332407 | Automatically locking crossbolt deadlock | George L. Engstrom | 1982-06-01 |