Inventor
TOKUYAMA SHUNJI
JP5 patents
Patents
5 patentsUS4618905AOct 21, 1986
DC circuit breaker
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US4216513AAug 5, 1980
D.C. Circuit breaker
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US5543597AAug 6, 1996
Grounding switch gear device
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US4578730AMar 25, 1986
High-voltage DC circuit breaker apparatus
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US3996439ADec 7, 1976
Puffer-type gas-blast circuit breaker
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