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发明名称
COLD HEADED CENTER VACUUM DRILL BIT
摘要
申请公布号
KR100197185(B1)
申请公布日期
1999.06.15
申请号
KR19930071892
申请日期
1993.06.19
申请人
NSS INDUSTRIES;KENNAMETAL INC.
发明人
MONTGOMERY JR.,ROBERT, H.;SHEIRER,DANIEL C.;ELAM, JAMES E.;EWING, PAUL E.
分类号
B21K5/02;B23B51/00;E21B10/38;E21B10/46;E21B10/58;(IPC1-7):E21B10/56
主分类号
B21K5/02
代理机构
代理人
主权项
地址
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