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发明名称
Error indicator for open-wire circuits
摘要
申请公布号
US2037150(A)
申请公布日期
1936.04.14
申请号
US19330658204
申请日期
1933.02.23
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
ROBERTS LELAND C.
分类号
H04B3/46;H04L25/04
主分类号
H04B3/46
代理机构
代理人
主权项
地址
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