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发明名称
Amortisseur utilisable en combinaison avec un outil pour le forage du sol
摘要
申请公布号
FR1405898(A)
申请公布日期
1965.07.16
申请号
FR19640974995
申请日期
1964.05.19
申请人
发明人
TIRASPOLSKY WLADIMIR
分类号
E21B17/07
主分类号
E21B17/07
代理机构
代理人
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