Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831485 | Gas discharge overvoltage arrester | Juergen Boy | 1989-05-16 |
| 4795866 | Vacuum tube switch which uses low temperature solder | Roman Renz, Klaus Gessner | 1989-01-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831485 | Gas discharge overvoltage arrester | Juergen Boy | 1989-05-16 |
| 4795866 | Vacuum tube switch which uses low temperature solder | Roman Renz, Klaus Gessner | 1989-01-03 |