Shaft-tubing sustaining device for deep-well pumps,申请号US19270239251-传众专利搜索

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发明名称	Shaft-tubing sustaining device for deep-well pumps
摘要
申请公布号	US1784406(A)	申请公布日期	1930.12.09
申请号	US19270239251	申请日期	1927.12.10
申请人	PEERLESS PUMP COMPANY	发明人	WINTROATH JOHN A.
分类号	F04D29/04;F04D29/044;F04D29/047	主分类号	F04D29/04
代理机构		代理人
主权项
地址

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