Mud pump piston,申请号US19400321061-传众专利搜索

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发明名称	Mud pump piston
摘要
申请公布号	US2287483(A)	申请公布日期	1942.06.23
申请号	US19400321061	申请日期	1940.02.27
申请人	MILLER ERWIN E	发明人	MILLER ERWIN E.
分类号	F04B53/14;F16J1/00	主分类号	F04B53/14
代理机构		代理人
主权项
地址

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