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发明名称
Means for producing time lag in electrical circuits
摘要
申请公布号
US2068293(A)
申请公布日期
1937.01.19
申请号
US19300437209
申请日期
1930.03.19
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
ILGENFRITZ LESTER M.
分类号
H04J1/16
主分类号
H04J1/16
代理机构
代理人
主权项
地址
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