Nouveau conduit de ventilation,申请号FRD973966-传众专利搜索

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发明名称	Nouveau conduit de ventilation
摘要
申请公布号	FR973966(A)	申请公布日期	1951.02.16
申请号	FRD973966	申请日期	1948.09.06
申请人		发明人	EVERS CLAUDE-BERNARD
分类号	F16L9/00	主分类号	F16L9/00
代理机构		代理人
主权项
地址

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