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发明名称
Transmission delay circuits
摘要
申请公布号
US1851090(A)
申请公布日期
1932.03.29
申请号
US19270200420
申请日期
1927.06.21
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
FETTER CHARLES H.
分类号
H03H19/00
主分类号
H03H19/00
代理机构
代理人
主权项
地址
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