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发明名称
Bohrlochfraesvorrichtung
摘要
申请公布号
DE1004118(B)
申请公布日期
1957.03.14
申请号
DE1953ST06902
申请日期
1953.08.19
申请人
DORSEY EZRA STRAITIFF
发明人
STRAITIFF DORSEY EZRA
分类号
E21B11/06
主分类号
E21B11/06
代理机构
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