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发明名称
摘要
申请公布号
SU506443(A1)
申请公布日期
1976.03.15
申请号
SU19742008476
申请日期
1974.03.28
申请人
发明人
分类号
B28B7/02;(IPC1-7):B28B7/02
主分类号
B28B7/02
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