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发明名称
Delay device
摘要
申请公布号
US2421026(A)
申请公布日期
1947.05.27
申请号
US19430493856
申请日期
1943.07.08
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
HALL JOHN A.;MASON WARREN P.
分类号
H03H9/125;H03H9/30;H03H9/36
主分类号
H03H9/125
代理机构
代理人
主权项
地址
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