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发明名称
Relay
摘要
申请公布号
US2137818(A)
申请公布日期
1938.11.22
申请号
US19370165020
申请日期
1937.09.22
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
WAGAR HAROLD N.
分类号
H01H50/30
主分类号
H01H50/30
代理机构
代理人
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