Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4451302 | Aluminum nitriding by laser | William C. Cochran | 1984-05-29 |
| 4343060 | Hydraulic control system for a street sweeper | Donald L. Hildebrand | 1982-08-10 |
| 4236756 | Street sweeper having an elevating hopper with supporting outriggers | Donald L. Hildebrand | 1980-12-02 |