Improvements to helical pumps,申请号GB19480012585-传众专利搜索

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发明名称	Improvements to helical pumps
摘要
申请公布号	GB649835(A)	申请公布日期	1951.02.07
申请号	GB19480012585	申请日期	1948.05.07
申请人	ETABLISSEMENTS POMPES GUINARD	发明人
分类号	F04C2/08	主分类号	F04C2/08
代理机构		代理人
主权项
地址

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