HYDRAULIC CONTROL SYSTEM FOR SELF-ADVANCING ROOF SUPPORTS,申请号PL19830241869-传众专利搜索

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发明名称	HYDRAULIC CONTROL SYSTEM FOR SELF-ADVANCING ROOF SUPPORTS
摘要
申请公布号	PL140385(B1)	申请公布日期	1987.04.30
申请号	PL19830241869	申请日期	1983.05.08
申请人		发明人
分类号	E21D23/16;E21D23/22;E21D23/26;(IPC1-7):E21D23/16	主分类号	E21D23/16
代理机构		代理人
主权项
地址

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