Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4789137 | Knock-down cattle guard | — | 1988-12-06 |
| 4516431 | Pipe testing apparatus | — | 1985-05-14 |
| 4480482 | Elastic limit detection and reset testing system | Robert R. Henry | 1984-11-06 |