Automatic change-over system for hydraulic apparatus,申请号US19310524153-传众专利搜索

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发明名称	Automatic change-over system for hydraulic apparatus
摘要
申请公布号	US1955922(A)	申请公布日期	1934.04.24
申请号	US19310524153	申请日期	1931.03.20
申请人	AMERICAN ENGINEERING COMPANY	发明人	LAMOND ROBERT C.
分类号	B63H25/28	主分类号	B63H25/28
代理机构		代理人
主权项
地址

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