GUIDANCE APPARATUS FOR PIPELINE TRANSPORTATION OF TIMBER THROUGH PIT SHAFTS,ESPECIALLY IN CASES OF MULTILEVEL MINES,申请号PL19750185214-传众专利搜索

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发明名称	GUIDANCE APPARATUS FOR PIPELINE TRANSPORTATION OF TIMBER THROUGH PIT SHAFTS,ESPECIALLY IN CASES OF MULTILEVEL MINES
摘要
申请公布号	PL102381(B1)	申请公布日期	1979.03.31
申请号	PL19750185214	申请日期	1975.12.02
申请人		发明人
分类号	E21F13/04;(IPC1-7):E21F13/04	主分类号	E21F13/04
代理机构		代理人
主权项
地址

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