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发明名称
摘要
申请公布号
SU537824(A1)
申请公布日期
1976.12.05
申请号
SU19752166544
申请日期
1975.08.18
申请人
发明人
分类号
B28B21/48;(IPC1-7):B28B21/48
主分类号
B28B21/48
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代理人
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