Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5632063 | Counterbalancing mechanism for an overhead door | Kenneth E. Carper, Alan R. Leist, George S. Carper, Thomas E. Agin | 1997-05-27 |
| 5375383 | Garage door frame | Mark W. Westerfield | 1994-12-27 |
| 5240216 | Universal angled flag bracket for use with tracks for sectional overhead doors | James R. J. York, Mark W. Westerfield | 1993-08-31 |
| D337042 | Angled flag bracket for overhead garage doors | James R. J. York, Mark W. Westerfield | 1993-07-06 |