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发明名称
Improved time-switching device for apparatus or machinery employing electric current
摘要
申请公布号
GB536854(A)
申请公布日期
1941.05.29
申请号
GB19400004594
申请日期
1940.03.12
申请人
RICHARD LEY ALKIN;DONALD RALPH CRANHAM
发明人
分类号
G04F3/02
主分类号
G04F3/02
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