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发明名称
METHOD OF GETTING COAL IN MINES CHARACTERISED BY DIFFICULT GEOLOGICAL CONDITIONS
摘要
申请公布号
PL185456(B1)
申请公布日期
2003.05.30
申请号
PL19970322095
申请日期
1997.09.12
申请人
RYBNICKA SP.WEGLOWA SA KWK ANNA
发明人
JUZEK GRZEGORZ;BIESEK JAN;PIETRZYKOWSKI KRYSTIAN;GRYCMAN JERZY;KABZA TADEUSZ;DUDA ENGELBERT
分类号
E21C41/18
主分类号
E21C41/18
代理机构
代理人
主权项
地址
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