Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4534476 | Bridge crane | William L. Burchfield, Edward L. Carr | 1985-08-13 |
| 4509431 | Bridge crane hoist stop system | — | 1985-04-09 |
| 4195962 | Platform loading system | Richard I. Schrick | 1980-04-01 |