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发明名称
OPTICAL COMPARISON SYSTEMS
摘要
申请公布号
US3481673(A)
申请公布日期
1969.12.02
申请号
USD3481673
申请日期
1966.06.01
申请人
VISION ENG. LTD.
发明人
ROBIN JOHN FREEMAN
分类号
G01C11/00;G01N21/956;(IPC1-7):G01B11/24;G02B27/14;G02B21/18
主分类号
G01C11/00
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代理人
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