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发明名称
Switch control mechanism for automatic telephone systems
摘要
申请公布号
US1902163(A)
申请公布日期
1933.03.21
申请号
US19320602189
申请日期
1932.03.31
申请人
LOUIS G. PACENT
发明人
GOODRUM CHARLES L.
分类号
H01H67/06
主分类号
H01H67/06
代理机构
代理人
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