Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873473 | Modular motor controller | Paul E. Penn, John W. Waymire | 1989-10-10 |
| 4737736 | Method and system for stabilizing and linearizing the output of a voltage-to-frequency converter | Paul E. Penn | 1988-04-12 |