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发明名称
Selective mechanism
摘要
申请公布号
US2503402(A)
申请公布日期
1950.04.11
申请号
US19470746794
申请日期
1947.05.08
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MCDAVITT MARCELLUS B.;MITCHELL DOREN
分类号
H01H67/06
主分类号
H01H67/06
代理机构
代理人
主权项
地址
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