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发明名称
SURFACE ROUGHNESS INDICATOR
摘要
申请公布号
CA612793(A)
申请公布日期
1961.01.17
申请号
CAD612793
申请日期
申请人
CANADIAN MARCONI COMPANY
发明人
KEITH C. M. GLEGG
分类号
主分类号
代理机构
代理人
主权项
地址
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