Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4779070 | High energy toroidal inductor | Donald T. Hackworth, Daniel W. Deis, David Marschik, Henry R. Schwenk, Carl J. Heyne +1 more | 1988-10-18 |
| 4672248 | High speed brushless dynamoelectric machine with improved control wheel assembly for excitation system components | Carl J. Heyne, Donald T. Hackworth, Edward Docherty | 1987-06-09 |
| 4639700 | Circuit interrupter with shock resistant mechanism | David Marschik | 1987-01-27 |