Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4994001 | Valve actuator differential worm planetary gear drive | Charles L. Hylton, R. Gregory Pence | 1991-02-19 |
| 4896562 | Valve actuator differential worm planetary gear drive | Charles L. Hylton, R. Gregory Pence | 1990-01-30 |
| 4839475 | Modular switch assembly having wiping contacts | Robert Auxier | 1989-06-13 |