Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5363636 | Rotary lawn mower blade with upturned cutting edges for making multiple cuts | — | 1994-11-15 |
| 4316123 | Staggered sustain voltage generator and technique | Bergert G. Kleen, William John Martin | 1982-02-16 |
| 4200868 | Buffered high frequency plasma display system | William John Martin, James B. Trushell | 1980-04-29 |