Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5192052 | Post extracting fixture | — | 1993-03-09 |
| 4746098 | Apparatus for removing and replacing manhole covers and gratings | — | 1988-05-24 |
| 4421256 | Sliding gate valve having adjustable seal pressure | Leroy V. Bonk | 1983-12-20 |