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发明名称
METHOD AND APPARATUS FOR LOOSENING AND/OR EXCAVATING COAL FORMATIONS BY MEANS OF AIR BREAKING
摘要
申请公布号
HU9204149(D0)
申请公布日期
1993.04.28
申请号
HU19920004149
申请日期
1992.12.29
申请人
GERGOE,GYOERGY,HU;VIRAGH,ISTVANNE,HU;VIRAGH,GABORNE,HU
发明人
GERGOE,GYOERGY,HU;VIRAGH,ISTVANNE,HU;VIRAGH,GABORNE,HU
分类号
E21C27/00
主分类号
E21C27/00
代理机构
代理人
主权项
地址
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