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发明名称
Color comparator
摘要
申请公布号
US1976672(A)
申请公布日期
1934.10.09
申请号
US19330681085
申请日期
1933.07.19
申请人
WALLACE & TIERNAN PRODUCTS, INC.
发明人
PEET GERALD D.
分类号
G01N21/29
主分类号
G01N21/29
代理机构
代理人
主权项
地址
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