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发明名称
Surface roughness meter
摘要
申请公布号
US3222978(A)
申请公布日期
1965.12.14
申请号
US19610129266
申请日期
1961.08.04
申请人
BARNES ENGINEERING COMPANY
发明人
DREYFUS MARC G.
分类号
G01B11/30
主分类号
G01B11/30
代理机构
代理人
主权项
地址
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