Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808932 | Rotor fault and location detector for induction motors | Stephen E. Grabkowski, Gerald Burt Kliman | 1989-02-28 |
| 4761703 | Rotor fault detector for induction motors | Gerald Burt Kliman, Rudolph Alfred Albert Koegl, Stephen E. Grabkowski | 1988-08-02 |
| 4609806 | Method and apparatus for determining weld quality in percussion welding | Stephen E. Grabkowski, Robert D. Williamson | 1986-09-02 |