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发明名称
Commutating devices
摘要
申请公布号
US2825768(A)
申请公布日期
1958.03.04
申请号
US19550504860
申请日期
1955.04.29
申请人
TELE-DYNAMICS INC.
发明人
BECK JOHN J.
分类号
H01H1/16;H01H19/56
主分类号
H01H1/16
代理机构
代理人
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地址
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