Automatically controlled hydraulic gate and gate control,申请号US19570701137-传众专利搜索

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发明名称	Automatically controlled hydraulic gate and gate control
摘要
申请公布号	US2984986(A)	申请公布日期	1961.05.23
申请号	US19570701137	申请日期	1957.12.06
申请人	HILL RAYMOND A	发明人	HILL RAYMOND A.
分类号	E02B7/20	主分类号	E02B7/20
代理机构		代理人
主权项
地址

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