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发明名称
DEVICE FOR PIERCING A HOLE THROUGH A METAL WORKPIECE BY ELECTRIC DISCHARGE
摘要
申请公布号
KR920006655(B1)
申请公布日期
1992.08.14
申请号
KR19840006864
申请日期
1984.11.02
申请人
FRAMATOME & CO.
发明人
CRESPIN, GERARD
分类号
B23H7/26;B23H9/00;B23H9/14;(IPC1-7):B23H9/14
主分类号
B23H7/26
代理机构
代理人
主权项
地址
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