Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809857 | Drum rotation indicator | Paul T. Culler, Kelly J. Drake | 1989-03-07 |
| 4398698 | Freefall winch system and method of operation | Steven C. Crawford, Thomas J. Feltman | 1983-08-16 |