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发明名称
Machine for testing hardness of distortable bodies
摘要
申请公布号
US2240154(A)
申请公布日期
1941.04.29
申请号
US19380213114
申请日期
1938.06.11
申请人
DETROIT TESTING MACHINE COMPANY
发明人
CAMPBELL RALPH;NASS FREDERICK H.
分类号
G01N3/42
主分类号
G01N3/42
代理机构
代理人
主权项
地址
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