Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4320278 | Servo feed system for electrical discharge machining apparatus | Oliver A. Bell, Jr., Randall C. Gilleland | 1982-03-16 |
| 4320279 | Programmable pulse generator for electrical discharge machining apparatus | Oliver A. Bell, Jr., Randall C. Gilleland | 1982-03-16 |
| 4319114 | Current limit system for electrical discharge machining apparatus | Oliver A. Bell, Jr., Randall C. Gilleland | 1982-03-09 |