Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874245 | Optical shaft angular and torsional displacement and speed sensing system | William B. Spillman, Jr., Robert Rudd, Sylvester M. Ellinger, Bruce R. Kline | 1989-10-17 |
| 4863274 | Optical shaft torsional displacement and speed sensing system | William B. Spillman, Jr., Robert Rudd, Michael Ellinger, Bruce R. Kline | 1989-09-05 |
| 4820916 | Optically powered sensor system | — | 1989-04-11 |