Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6952102 | Method and apparatus for monitoring vacuum degree of vacuum in vacuum interrupter | Hiroaki Sano | 2005-10-04 |
| 4553139 | Vacuum monitor for vacuum interrupter | Shuzo Tanigaki | 1985-11-12 |
| 4547769 | Vacuum monitor device and method for vacuum interrupter | Shuzo Tanigaki, Tomio Yasuda | 1985-10-15 |