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发明名称
Hardness testing apparatus
摘要
申请公布号
US2726540(A)
申请公布日期
1955.12.13
申请号
US19510260226
申请日期
1951.12.06
申请人
SERVICE DIAMOND TOOL COMPANY
发明人
SMALL LOUIS;ANTONIK MICHAEL G.
分类号
G01N3/44
主分类号
G01N3/44
代理机构
代理人
主权项
地址
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