Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867810 | Method and apparatus for hardening cam lobes on a camshaft | — | 1989-09-19 |
| 4855551 | Method and apparatus for hardening gears | George M. Mucha, George D. Pfaffmann | 1989-08-08 |
| 4855556 | Method and apparatus for hardening gears and similar workpieces | George M. Mucha, George D. Pfaffmann | 1989-08-08 |