Pneumatic-hydraulic system for operating well pumping equipment,申请号US19480014355-传众专利搜索

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发明名称	Pneumatic-hydraulic system for operating well pumping equipment
摘要
申请公布号	US2564285(A)	申请公布日期	1951.08.14
申请号	US19480014355	申请日期	1948.03.11
申请人	SMITH SAMUEL V	发明人	SMITH SAMUEL V.
分类号	F04B47/04	主分类号	F04B47/04
代理机构		代理人
主权项
地址

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