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发明名称
Transmission regulation
摘要
申请公布号
US1778750(A)
申请公布日期
1930.10.21
申请号
US19260158169
申请日期
1926.12.31
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
BRUCE EDMOND
分类号
H03G3/22
主分类号
H03G3/22
代理机构
代理人
主权项
地址
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