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摘要
申请公布号
SU58377(A1)
申请公布日期
1940.11.30
申请号
SU19400001497D
申请日期
1940.03.26
申请人
VASILEV K.I.
发明人
VASILEV K.I.
分类号
A01C7/20
主分类号
A01C7/20
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