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https://patents.google.com/patent/CN202487484U/en
CN202487484U - Indoor high pressure vacuum breaker - Google Patents
The utility model discloses an indoor high pressure vacuum breaker which comprises an operating mechanism, three vacuum arc-extinguish chambers and a mechanism...
pressure vacuum breakerindoorhighgooglepatents
https://patents.google.com/patent/CN107424866A/en
CN107424866A - A kind of vacuum high-pressure breaker and its method of work - Google Patents
The present invention discloses a kind of vacuum high-pressure breaker and its method of work, including breaking operating room and breaking power house,...