Conditionnement d'air par appareil frigorifique placé au fond de la mine,申请号FRD820779-传众专利搜索

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发明名称	Conditionnement d'air par appareil frigorifique placé au fond de la mine
摘要
申请公布号	FR820779(A)	申请公布日期	1937.11.18
申请号	FRD820779	申请日期	1937.04.01
申请人		发明人	LEMALE PAUL, CHARLES
分类号	E21F3/00	主分类号	E21F3/00
代理机构		代理人
主权项
地址

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