Valve for well pump plungers,申请号US19310533514-传众专利搜索

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发明名称	Valve for well pump plungers
摘要
申请公布号	US1931938(A)	申请公布日期	1933.10.24
申请号	US19310533514	申请日期	1931.04.28
申请人	H. R. GILES;W. F. HALL;GEORGE LOWREY	发明人	PIPPIN JOHN W.
分类号	F04B53/12	主分类号	F04B53/12
代理机构		代理人
主权项
地址

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