FLEXIBLE CONNECTOR FOR A WALKING MINE ROOF SUPPORT,申请号PL19820234678-传众专利搜索

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发明名称	FLEXIBLE CONNECTOR FOR A WALKING MINE ROOF SUPPORT
摘要
申请公布号	PL135227(B1)	申请公布日期	1985.10.31
申请号	PL19820234678	申请日期	1982.01.08
申请人		发明人
分类号	E21D;E21D23/04;F16G;(IPC1-7):E21D23/04	主分类号	E21D
代理机构		代理人
主权项
地址

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