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发明名称
METHOD OF LOOSENING FLOOR ROCKS IN UNDERGROUND MINE WORKINGS AND APPARATUS THEREFOR
摘要
申请公布号
PL274728(A1)
申请公布日期
1990.03.19
申请号
PL19880274728
申请日期
1988.09.16
申请人
GWARECTWO BUDOWNICTWA GORNICZE;POLMAG
发明人
NAPIERACZ TADEUSZ;SZYNDLER JAN;ZADROZNY MARIAN;SZCZUKIEWICZ ROMAN;STANKOWSKI LESZEK;GUZIK ZDZISLAW;GASIOR MIECZYSLAW;DYRDA ALEKSANDER;SLUZALEK ROMAN;BUDNA JANINA;SAWICKI BOGDAN
分类号
E21C;(IPC1-7):E21C/
主分类号
E21C
代理机构
代理人
主权项
地址
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