Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4648660 | Method and apparatus for mining machine cutter head | John P. Mann, Victor M. Levenstein | 1987-03-10 |
| 4616736 | Oil system for contiguous gear boxes | — | 1986-10-14 |
| 4252050 | Control valve unit for hydraulic actuator | James D. Barton | 1981-02-24 |