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摘要
申请公布号
US2148408(A)
申请公布日期
1939.02.21
申请号
US19350024752
申请日期
1935.06.03
申请人
CHICAGO TELEPHONE SUPPLY CO.
发明人
SCHELLENGER NEWTON C.
分类号
H01C10/36
主分类号
H01C10/36
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代理人
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