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发明名称
Timing apparatus
摘要
申请公布号
US2531138(A)
申请公布日期
1950.11.21
申请号
US19490080516
申请日期
1949.03.09
申请人
LEHDE RICHARD H
发明人
LEHDE RICHARD H.
分类号
G04F3/02;H01H7/12
主分类号
G04F3/02
代理机构
代理人
主权项
地址
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