Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4675761 | Magnetic head positioning apparatus and method | William H. Ashbee, Richard S. Kilen, Alan J. Kirton, James A. Valent | 1987-06-23 | $33,440,000 |
| 4564794 | Phase locked loop and a motor control servo | Richard S. Kilen | 1986-01-14 | $33,933,000 |
| 4457506 | Servo-controlled automatic document feeder | William H. Ashbee, Mark A. Beran, Donald F. Colglazier, Donovan M. Janssen, John Paul Mantey +3 more | 1984-07-03 | $12,144,000 |