Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5235177 | Angular position sensor using a polarized disc with coded tracks | Paul L. Hutchinson | 1993-08-10 |
| D297127 | Compass | Richard J. Keohan | 1988-08-09 |
| 4656751 | Magnetic compass | William N. Anastos | 1987-04-14 |