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发明名称
METHOD OF WINNING OF REMAINING COAL BEDS ON DECLINE
摘要
申请公布号
PL234393(A2)
申请公布日期
1983.01.03
申请号
PL19810234393
申请日期
1981.12.21
申请人
KOPALNIA WEGLA KAMIENNEGO RYME
发明人
BARTECZKO JOZEF;BUDZYNSKI LESZEK;URBANCZYK LESZEK
分类号
E21C;(IPC1-7):E21C/
主分类号
E21C
代理机构
代理人
主权项
地址
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