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发明名称
Dispositif de soutènement provisoire utilisable au cours du percement d'une galeriede mine ou analogue
摘要
申请公布号
FR1233901(A)
申请公布日期
1960.10.13
申请号
FR19590803277
申请日期
1959.08.21
申请人
发明人
CHAPRON GEORGES
分类号
E21D17/06;E21D19/04
主分类号
E21D17/06
代理机构
代理人
主权项
地址
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