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经营范围
发明名称
Polarized relay
摘要
申请公布号
US2153641(A)
申请公布日期
1939.04.11
申请号
US19380194536
申请日期
1938.03.08
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
PRATT MOLLIE S.
分类号
H01H51/22
主分类号
H01H51/22
代理机构
代理人
主权项
地址
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