Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5846026 | Method for pipeline padding | John Gilbert, William Neal Brown, Jack D. Smith | 1998-12-08 |
| 5788168 | Self-loading mobile crusher system | John Gilbert, William Neal Brown, Jack D. Smith | 1998-08-04 |
| 5577808 | Quarry miner | — | 1996-11-26 |
| 5575538 | Rock saw with centerline conveyor assembly and method of digging a narrow trench | Jack D. Smith | 1996-11-19 |
| 5497567 | Wide trencher with plurality of chain type diggers | — | 1996-03-12 |
| 5471771 | Method and apparatus for cooling chain type diggers | — | 1995-12-05 |
| RE35088 | Trenching machine with laterally adjustable chain-type digging implement | — | 1995-11-14 |
| 5209001 | Trenching machine with longitudinally stabilized main frame for stabilizing digging implement | — | 1993-05-11 |
| 5070632 | Trenching machine with laterally adjustable chain-type digging implement | — | 1991-12-10 |
| D309613 | Road planer | — | 1990-07-31 |
| 4755001 | Road planar | — | 1988-07-05 |
| 4595241 | Digging tooth and holder therefor | Jonathan Gilbert, Albert J. Gilbert | 1986-06-17 |