Double-acting pump,申请号US19290372687-传众专利搜索

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发明名称	Double-acting pump
摘要
申请公布号	US1778063(A)	申请公布日期	1930.10.14
申请号	US19290372687	申请日期	1929.06.21
申请人	CAIRNCROSS JAMES C	发明人	CAIRNCROSS JAMES C.
分类号	F04B5/02;F04B53/16	主分类号	F04B5/02
代理机构		代理人
主权项
地址

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