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发明名称
Perfectionnements aux outils de mine à embout amovible
摘要
申请公布号
FR1463940(A)
申请公布日期
1966.07.22
申请号
FR19650036995
申请日期
1965.11.03
申请人
SOCIETE DES POUDRES METALLIQUES ET DES ALLIAGES SPECIAUX UGINE-CARBONE
发明人
分类号
E21C27/44
主分类号
E21C27/44
代理机构
代理人
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地址
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