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发明名称
Piezoelectric type switching relay
摘要
申请公布号
US2471967(A)
申请公布日期
1949.05.31
申请号
US19460667071
申请日期
1946.05.03
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MASON WARREN P.
分类号
H01H57/00
主分类号
H01H57/00
代理机构
代理人
主权项
地址
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