Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5632063 | Counterbalancing mechanism for an overhead door | Kenneth E. Carper, Alan R. Leist, Tony Y. Lin, George S. Carper | 1997-05-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5632063 | Counterbalancing mechanism for an overhead door | Kenneth E. Carper, Alan R. Leist, Tony Y. Lin, George S. Carper | 1997-05-27 |