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发明名称
Device for determining the exact color of articles
摘要
申请公布号
US1802007(A)
申请公布日期
1931.04.21
申请号
US19280255917
申请日期
1928.02.21
申请人
DURFEE WALTER C
发明人
DURFEE WALTER C.
分类号
G01N21/29
主分类号
G01N21/29
代理机构
代理人
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