Katsumi Kuroda

Follow

Person

Hitachi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Vacuum circuit breaker, and vacuum bulb and vacuum bulb electrode u...
- Patent number 6,248,969
- Issue date Jun 19, 2001
- Hitachi, Ltd.
- Katsuhiro Komuro
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum circuit breaker with improved contact assembly
- Patent number 5,691,521
- Issue date Nov 25, 1997
- Hitachi, Ltd.
- Katsuhiro Komuro
- H01 - BASIC ELECTRIC ELEMENTS