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发明名称
APPARATUS FOR MEASURING OUTER FRICTION ANGLE AND NATURAL ANGLE OF REPOSE FOR BULK MATERIALS
摘要
申请公布号
PL59556(Y1)
申请公布日期
2003.02.28
申请号
PL19980108389U
申请日期
1998.07.13
申请人
POLITECHNIKA LUBELSKA
发明人
OPIELAK MAREK;GAJAK ANNA
分类号
G01B3/56;(IPC1-7):G01B3/56
主分类号
G01B3/56
代理机构
代理人
主权项
地址
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