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发明名称
Telegraph signal bias and distortion meter
摘要
申请公布号
US3189733(A)
申请公布日期
1965.06.15
申请号
US19620193201
申请日期
1962.05.08
申请人
THE WESTERN UNION TELEGRAPH COMPANY
发明人
CANNON WILLIAM D.;BERTUCCIO DOMENICK J.
分类号
H03M1/00;H04L12/26;H04L25/04
主分类号
H03M1/00
代理机构
代理人
主权项
地址
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