Screw type oil pump,申请号US19480010342-传众专利搜索

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发明名称	Screw type oil pump
摘要
申请公布号	US2523588(A)	申请公布日期	1950.09.26
申请号	US19480010342	申请日期	1948.02.24
申请人	ORMSBY CHARLES F	发明人	ORMSBY CHARLES F.
分类号	F04D3/02	主分类号	F04D3/02
代理机构		代理人
主权项
地址

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