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发明名称
Improved colour charts and the like and method of and means for producing the same
摘要
申请公布号
GB425246(A)
申请公布日期
1935.03.11
申请号
GB19330029333
申请日期
1933.10.23
申请人
CLARENCE WILLIAM EARLE
发明人
分类号
G01J3/52
主分类号
G01J3/52
代理机构
代理人
主权项
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