Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE31391 | Voltage and current regulator with automatic switchover | William F. Davis, Ronald W. Russell, Thomas M. Frederiksen | 1983-09-20 |
| 4380009 | Message communication system | William S. Duvall, Donald P. Allen | 1983-04-12 |