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摘要
申请公布号
SU73154(A1)
申请公布日期
1947.11.30
申请号
SU19470358784
申请日期
1947.09.03
申请人
NECHAEV V.N.;NECHAEV E.V.
发明人
NECHAEV V.N.;NECHAEV E.V.
分类号
B66C9/00
主分类号
B66C9/00
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