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发明名称
SELBSTEINSTELLBARER KORB FUER BOHRMEISSEL.
摘要
申请公布号
DE3873358(D1)
申请公布日期
1992.09.10
申请号
DE19883873358
申请日期
1988.01.21
申请人
INCO LTD., TORONTO, ONTARIO, CA
发明人
KAVEN, ALLEN H., SUDBURY ONTARIO P3E 4N1, CA
分类号
E21B19/16;E21B19/18;(IPC1-7):E21B19/18
主分类号
E21B19/16
代理机构
代理人
主权项
地址
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