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发明名称
Perfectionnements aux étançons et semblables en particulier pour travaux miniers
摘要
申请公布号
FR978150(A)
申请公布日期
1951.04.10
申请号
FRD978150
申请日期
1948.12.22
申请人
NOUVELLE SOCIETE DES ATELIERS PATTE
发明人
分类号
E21D15/40
主分类号
E21D15/40
代理机构
代理人
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