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摘要
申请公布号
SU81791(A2)
申请公布日期
1949.11.30
申请号
SU19490396462
申请日期
1949.02.25
申请人
PINCHUK A.T.
发明人
PINCHUK A.T.
分类号
H01H51/32;H01H71/36
主分类号
H01H51/32
代理机构
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