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发明名称
Electrical attenuator
摘要
申请公布号
US2087949(A)
申请公布日期
1937.07.27
申请号
US19320634616
申请日期
1932.09.23
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
HOLDEN WILLIAM H. T.
分类号
H03G1/00;H03H7/25
主分类号
H03G1/00
代理机构
代理人
主权项
地址
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