Improvements in and relating to rotary pumps,申请号GB19380005330-传众专利搜索

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发明名称	Improvements in and relating to rotary pumps
摘要
申请公布号	GB511776(A)	申请公布日期	1939.08.24
申请号	GB19380005330	申请日期	1938.02.21
申请人	ANDRE DUTREY	发明人
分类号	F01C11/00;F04C9/00	主分类号	F01C11/00
代理机构		代理人
主权项
地址

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