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发明名称
Frequency responsive relay
摘要
申请公布号
US2622168(A)
申请公布日期
1952.12.16
申请号
US19490114536
申请日期
1949.09.08
申请人
WESTINGHOUSE AIR BRAKE COMPANY
发明人
SHIELDS CHARLES B.;JR. WALTER P. QUINTIN,
分类号
H01H51/32
主分类号
H01H51/32
代理机构
代理人
主权项
地址
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