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发明名称
摘要
申请公布号
SU410978(A1)
申请公布日期
1974.01.15
申请号
SU19711697520
申请日期
1971.09.15
申请人
发明人
分类号
B29D30/00;B21D7/02;(IPC1-7):B29H15/00
主分类号
B29D30/00
代理机构
代理人
主权项
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