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发明名称
Artificial bottom of a mining shaft
摘要
申请公布号
PL68642(Y1)
申请公布日期
2016.10.31
申请号
PL20140123095U
申请日期
2014.05.19
申请人
AKADEMIA GÓRNICZO-HUTNICZA IM. STANISŁAWA STASZICA W KRAKOWIE
发明人
HANSEL JÓZEF;WÓJCIK MARIAN;ROKITA TOMASZ;OLSZYNA GRZEGORZ
分类号
E21D5/12
主分类号
E21D5/12
代理机构
代理人
主权项
地址
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