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发明名称
Perfectionnements apportés aux dispositifs de soutien hydro-pneumatiques, plus spécialement aux étançons de mines
摘要
申请公布号
FR1222666(A)
申请公布日期
1960.06.13
申请号
FR19590784409
申请日期
1959.01.19
申请人
MASCHINENFABRIK U. EISENGIESSEREI A. BEIEN
发明人
分类号
E21D15/44
主分类号
E21D15/44
代理机构
代理人
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