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发明名称
ANTI-CAVING SHIELD OF UNDERHUNG LINING
摘要
申请公布号
PL254315(A1)
申请公布日期
1987.01.26
申请号
PL19850254315
申请日期
1985.06.29
申请人
ZABRZANSKIE GWARECTWO WEGLOWE
发明人
STUDENT ROMUALD;SZLACHTA JAN;MIS BERNARD;SKOCZYNSKI WOJCIECH;PRETOR WINCENTY;WRONSKI JAN;PELKA HUBERT
分类号
E21D;(IPC1-7):E21D/
主分类号
E21D
代理机构
代理人
主权项
地址
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