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发明名称
METHOD OF MAKING COLLISIONLESS BY-BASSES WHILE DRIVING A MINE SHAFT
摘要
申请公布号
PL285055(A1)
申请公布日期
1991.11.04
申请号
PL19900285055
申请日期
1990.05.02
申请人
SLASK KOPALNIA WEGLA KAMIENNEG
发明人
GRACA ADAM;JAROSZ MARCIN;DABROWSKI ROMUALD;KISZKA JOACHIM;BIELSKI TOMASZ;LES WLODZIMIERZ;NASARZEWSKI MIROSLAW;KOT PAWEL
分类号
E21D1/00;E21D13/00;(IPC1-7):E21D13/00
主分类号
E21D1/00
代理机构
代理人
主权项
地址
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