WORKING PLATFORM OF A MECHANICAL MINER,申请号PL19850253338-传众专利搜索

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发明名称	WORKING PLATFORM OF A MECHANICAL MINER
摘要
申请公布号	PL147207(B1)	申请公布日期	1989.05.31
申请号	PL19850253338	申请日期	1985.05.09
申请人		发明人
分类号	E21D;E21D9/12;E21D11/40;(IPC1-7):E21D11/40	主分类号	E21D
代理机构		代理人
主权项
地址

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