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发明名称
Telephone system
摘要
申请公布号
US2355215(A)
申请公布日期
1944.08.08
申请号
US19420464811
申请日期
1942.11.06
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
GODDARD MYRON C.
分类号
H04Q3/42
主分类号
H04Q3/42
代理机构
代理人
主权项
地址
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