Inventor

SAKAKI MASAYUKI

JP3 patents

Patents

3 patents

US4547769AOct 15, 1985

Vacuum monitor device and method for vacuum interrupter

MEIDENSHA ELECTRIC MFG CO LTD47 citations90

US4553139ANov 12, 1985

Vacuum monitor for vacuum interrupter

MEIDENSHA ELECTRIC MFG CO LTD16 citations70

US6952102B2Oct 4, 2005

Method and apparatus for monitoring vacuum degree of vacuum in vacuum interrupter

MEIDENSHA ELECTRIC MFG CO LTD4 citations60