PROCEDE POUR LE SOUTENEMENT MECANISE D'UNE VOIE EN FORME DE TUNNEL ET DISPOSITIF POUR LA MISE EN OEUVRE DU PROCEDE,申请号BE19740151176-传众专利搜索

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发明名称	PROCEDE POUR LE SOUTENEMENT MECANISE D'UNE VOIE EN FORME DE TUNNEL ET DISPOSITIF POUR LA MISE EN OEUVRE DU PROCEDE
摘要
申请公布号	BE822978(A1)	申请公布日期	1975.04.01
申请号	BE19740151176	申请日期	1974.12.05
申请人		发明人
分类号	E21D11/40	主分类号	E21D11/40
代理机构		代理人
主权项
地址

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