Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9711306 | Switch apparatus for connection with a DC circuit | Richard D. Prohaska, Warren Sipe | 2017-07-18 |
| 9129765 | Switch apparatus for connection with a DC circuit | Richard D. Prohaska, Warren Sipe | 2015-09-08 |