Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4281231 | High tension vacuum switches | Bertus Griesen | 1981-07-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4281231 | High tension vacuum switches | Bertus Griesen | 1981-07-28 |