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经营范围
发明名称
Reduction of interference
摘要
申请公布号
US1888280(A)
申请公布日期
1932.11.22
申请号
US19310567726
申请日期
1931.10.08
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
MCCANN THOMAS A.
分类号
F16F15/10;H04L27/10
主分类号
F16F15/10
代理机构
代理人
主权项
地址
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