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发明名称
ARRANGEMENT FOR DRILLING AND SUPPORTING ENTRIES
摘要
申请公布号
SU1419529(A3)
申请公布日期
1988.08.23
申请号
SU19833625754
申请日期
1983.07.20
申请人
GEPIPARI TECH INTEZET;MECSEKI SZENBANYAK
发明人
DERD GERGE,HU;JOZHEF NEMET,HU;BELA SHEBESHTEN,HU;ZOLTAN VIDA,HU
分类号
E21D3/00;E21B7/20;E21B7/28;E21B19/00
主分类号
E21D3/00
代理机构
代理人
主权项
地址
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