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发明名称
Tie line
摘要
申请公布号
US2379061(A)
申请公布日期
1945.06.26
申请号
US19440544555
申请日期
1944.07.12
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
BOWNE LANGFORD J.
分类号
H04M1/74
主分类号
H04M1/74
代理机构
代理人
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地址
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