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发明名称
Concretion feeder for pumped pipeline
摘要
申请公布号
PL218190(B1)
申请公布日期
2014.10.31
申请号
PL20090388639
申请日期
2009.07.27
申请人
POLITECHNIKA &Sacute,L&Aogon,SKA
发明人
KOWAL ALEKSANDER;PLEWA FRANCISZEK
分类号
E21C50/00;E02F3/00;E02F7/00
主分类号
E21C50/00
代理机构
代理人
主权项
地址
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