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发明名称
Control of regular and distant talking subscribers sets
摘要
申请公布号
US2801287(A)
申请公布日期
1957.07.30
申请号
US19540443792
申请日期
1954.07.16
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
CLEMENCY WILLIAM F.
分类号
H04M1/60
主分类号
H04M1/60
代理机构
代理人
主权项
地址
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