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经营范围
发明名称
Burin à tranchant pour la perforation de roches.
摘要
申请公布号
CH289012(A)
申请公布日期
1953.02.28
申请号
CHD289012
申请日期
1950.11.04
申请人
DIONISOTTI,JOSEPH
发明人
DIONISOTTI,JOSEPH
分类号
E21B10/40
主分类号
E21B10/40
代理机构
代理人
主权项
地址
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