Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5496238 | Physical conditioning apparatus | — | 1996-03-05 |
| 5170833 | Compensating mechanism for variable speed roll-up door | Craig Jerry | 1992-12-15 |
| 4976302 | Apparatus for opening and closing roll-up door | — | 1990-12-11 |
| 4690195 | Apparatus for opening and closing industrial door | — | 1987-09-01 |
| 4601320 | Industrial door | — | 1986-07-22 |