Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4277317 | Shunt current elimination and device employing tunneled protective current | Patrick G. Grimes | 1981-07-07 |
| 4197169 | Shunt current elimination and device | Patrick G. Grimes, Richard J. Bellows | 1980-04-08 |