Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4784538 | Disposable disk cutter | Aaron Erisman, Donald Whitney | 1988-11-15 |
| 4629377 | Disposable disk cutter | Aaron Erisman, Donald Whitney | 1986-12-16 |
| 4542638 | Automatic calibration of sensor circuits in gear shapers | — | 1985-09-24 |
| 4533858 | Temperature compensation apparatus for gear shapers | — | 1985-08-06 |
| 4254690 | Control system for machine tool with hydraulically stroked cutter | Clarence M. Nichols | 1981-03-10 |