Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4953692 | Drive frame for a scraper chain conveyor | Norman Cummings | 1990-09-04 |
| 4438837 | Conveyor drive gear box | Nigel J. Box, David D. Phillips | 1984-03-27 |
| 4407545 | Mine system | — | 1983-10-04 |
| 4396229 | Mining machine with externally mounted drive means | — | 1983-08-02 |