Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7261139 | Manual operating mechanism for upward acting door | David Varley, Raymond A. Clark | 2007-08-28 |
| 7231953 | Rollup door with direct connected drive motor unit | David Varley, Richard D. Aiken, Raymond A. Clark | 2007-06-19 |
| 7131481 | Flexible curtain rollup door with combination stiffening struts and windlocks | David Varley, Richard D. Aiken, Raymond A. Clark | 2006-11-07 |
| 6722416 | Flexible curtain rollup door with combination stiffening struts and windlocks | David Varley, Richard D. Aiken, Raymond A. Clark | 2004-04-20 |
| 4543035 | Method for loading cargo | — | 1985-09-24 |