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发明名称
Apparatus for determining hardness
摘要
申请公布号
US2527612(A)
申请公布日期
1950.10.31
申请号
US19470722615
申请日期
1947.01.17
申请人
YOUNGBLOOD ROBERT N
发明人
YOUNGBLOOD ROBERT N.
分类号
G01N3/46
主分类号
G01N3/46
代理机构
代理人
主权项
地址
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