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发明名称
THICKNESS CONTROL METHODS OF ANNULAR EXTRUSION
摘要
申请公布号
KR1019790001851(B1)
申请公布日期
1979.12.24
申请号
KR1019740004379
申请日期
1974.12.27
申请人
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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