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发明名称
Telephone system
摘要
申请公布号
US2283610(A)
申请公布日期
1942.05.19
申请号
US19400316903
申请日期
1940.02.02
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MOHR MILTON E.
分类号
H04M15/36
主分类号
H04M15/36
代理机构
代理人
主权项
地址
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