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发明名称
Signal distortion indicator
摘要
申请公布号
US2036332(A)
申请公布日期
1936.04.07
申请号
US19330695349
申请日期
1933.10.26
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
HERMAN JOSEPH
分类号
H04L12/26;H04L25/04
主分类号
H04L12/26
代理机构
代理人
主权项
地址
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