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发明名称
An improved electrically operated resonance device for the control of definite operations
摘要
申请公布号
GB479725(A)
申请公布日期
1938.02.10
申请号
GB19370014481
申请日期
1937.05.25
申请人
LANDIS & GYR A.I¬G.
发明人
分类号
H01H51/32
主分类号
H01H51/32
代理机构
代理人
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