Double acting pump,申请号US19370142291-传众专利搜索

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发明名称	Double acting pump
摘要
申请公布号	US2153974(A)	申请公布日期	1939.04.11
申请号	US19370142291	申请日期	1937.05.12
申请人	SCHENK CHARLES J	发明人	SCHENK CHARLES J.
分类号	F04B9/02;F04B11/00	主分类号	F04B9/02
代理机构		代理人
主权项
地址

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