Shimizu; Seiki
Patent Applications and Registrations
Patent applications and USPTO patent grants for Shimizu; Seiki.The latest application filed is for "vacuum circuit breaker".
- Shimizu; Seiki - Hitachi JP
| Patent | Date |
|---|---|
| Vacuum circuit breaker Grant 4,892,986 - Watanabe , et al. January 9, 1 | 1990-01-09 |
| Ceramic substrate with metal plate Grant 4,497,875 - Arakawa , et al. February 5, 1 | 1985-02-05 |
| Stacked structure having matrix-fibered composite layers and a metal layer Grant 4,482,912 - Chiba , et al. November 13, 1 | 1984-11-13 |
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