Issued Patents 1982
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4359102 | Resonance aided earth-working equipment | Harry J. Stormon | 1982-11-16 |
| 4353175 | Resonantly driven trenching tool | — | 1982-10-12 |
| 4343514 | Resonant tool driving system with gap | — | 1982-08-10 |
| 4340255 | Resonantly driven vertical impact system | — | 1982-07-20 |
| 4330156 | Resonant system speed control | — | 1982-05-18 |
| 4320807 | Resonant system support | — | 1982-03-23 |