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发明名称
Procédé de construction de galeries souterraines
摘要
申请公布号
FR1182830(A)
申请公布日期
1959.06.30
申请号
FRD1182830
申请日期
1957.09.17
申请人
发明人
DESCHAMPS PAUL
分类号
E21D9/06;E21D19/04
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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