Perfectionnement au procédé de congélation, notamment pour le creusement de puits et excavations en terrains aquifères,申请号FR19570738390-传众专利搜索

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发明名称	Perfectionnement au procédé de congélation, notamment pour le creusement de puits et excavations en terrains aquifères
摘要
申请公布号	FR72612(E)	申请公布日期	1960.04.22
申请号	FR19570738390	申请日期	1957.05.13
申请人	FORAKY	发明人
分类号	E21D1/14	主分类号	E21D1/14
代理机构		代理人
主权项
地址

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