Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4743814 | Static power conversion for adding DC motors | — | 1988-05-10 |
| 4684854 | Method and apparatus for adding additional D.C. motors and control thereof | — | 1987-08-04 |
| 4383794 | Frame structure for track-type vehicle | — | 1983-05-17 |
| 4371086 | Support structures of excavating machines | David J. Whittingham | 1983-02-01 |