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发明名称
Guide with sacrificial inserts
摘要
申请公布号
US3277966(A)
申请公布日期
1966.10.11
申请号
US19630320754
申请日期
1963.11.01
申请人
发明人
WARD WARREN F.
分类号
C23F13/02;E21B17/10;E21B41/02
主分类号
C23F13/02
代理机构
代理人
主权项
地址
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