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发明名称
PACKER LOCKING APPARATUS
摘要
申请公布号
CA2023151(A1)
申请公布日期
1991.08.06
申请号
CA19902023151
申请日期
1990.08.13
申请人
BURNS, TIMOTHY D., SR.;CASKEY, KENNETH D.;WINSLOW, DONALD W.
发明人
BURNS, TIMOTHY D., SR.;CASKEY, KENNETH D.;WINSLOW, DONALD W.
分类号
E21B23/00;E21B23/01;E21B23/06;E21B33/129;(IPC1-7):E21B33/12
主分类号
E21B23/00
代理机构
代理人
主权项
地址
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