Plunger valve for oil well pumps,申请号US19340711020-传众专利搜索

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发明名称	Plunger valve for oil well pumps
摘要
申请公布号	US2026058(A)	申请公布日期	1935.12.31
申请号	US19340711020	申请日期	1934.02.13
申请人	PERRY WIGHTMAN C	发明人	PERRY WIGHTMAN C.
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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