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发明名称
Friction measuring device
摘要
申请公布号
US2531906(A)
申请公布日期
1950.11.28
申请号
US19460659745
申请日期
1946.04.05
申请人
RADIO CORPORATION OF AMERICA
发明人
CHRISTIAN SCHUYLER M.
分类号
G01N19/02
主分类号
G01N19/02
代理机构
代理人
主权项
地址
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