Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4987511 | Gapped arrester | Philip J. Hopkinson | 1991-01-22 |
| 4980789 | Two-stage gapped surge arrester | Phillip Hopkinson, Stephen D. Smith | 1990-12-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4987511 | Gapped arrester | Philip J. Hopkinson | 1991-01-22 |
| 4980789 | Two-stage gapped surge arrester | Phillip Hopkinson, Stephen D. Smith | 1990-12-25 |