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发明名称
Telephone system
摘要
申请公布号
US2101258(A)
申请公布日期
1937.12.07
申请号
US19360068255
申请日期
1936.03.11
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
KORN FRANKLIN A.
分类号
H04M15/08
主分类号
H04M15/08
代理机构
代理人
主权项
地址
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