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发明名称
DEVICE FOR DETERMINING STATIC AND KINETIC FRICTION FACTORS
摘要
申请公布号
PL150990(B2)
申请公布日期
1990.07.31
申请号
PL19880272038
申请日期
1988.04.21
申请人
发明人
分类号
G01L;G01N19/02;G09B;G09B23/06;(IPC1-7):G01N19/02
主分类号
G01L
代理机构
代理人
主权项
地址
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