Pump jack,申请号US19460715734-传众专利搜索

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发明名称	Pump jack
摘要
申请公布号	US2573948(A)	申请公布日期	1951.11.06
申请号	US19460715734	申请日期	1946.12.12
申请人	BERNARD LORN T	发明人	BERNARD LORN T.
分类号	F04B9/04	主分类号	F04B9/04
代理机构		代理人
主权项
地址

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