Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5359815 | Profile grinder | Robert R. Schrunk, III, Harry Madison | 1994-11-01 |
| 5305692 | Truck mounted tie exchanger with self-aligning tie clamp | Harry Madison, Robert F. Ryan | 1994-04-26 |