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发明名称
System for removing methane from flooding floors in coal longwall headings
摘要
申请公布号
PL199088(B1)
申请公布日期
2008.08.29
申请号
PL20020356080
申请日期
2002.09.16
申请人
MARKS GRZEGORZ;GRANIECZNY LESZEK;HERMAN JAN
发明人
MARKS GRZEGORZ;GRANIECZNY LESZEK;HERMAN JAN
分类号
E21F7/00
主分类号
E21F7/00
代理机构
代理人
主权项
地址
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