Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5195865 | Rapid interchangeability device for earth-moving devices carrying vibrators | — | 1993-03-23 |
| 4740102 | Apparatus for positioning road curbs, autoblocking paving blocks and the like | Alain J. Koehl, Francois A. Koehl | 1988-04-26 |
| 4259029 | Articulated panel structure for lining excavation trenches | — | 1981-03-31 |
| 4199278 | Interlocking members for excavation liners | — | 1980-04-22 |