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发明名称
Exposure head for photometric comparator instruments
摘要
申请公布号
US2739246(A)
申请公布日期
1956.03.20
申请号
US19500166943
申请日期
1950.06.08
申请人
HENRY A. GARDNER LABORATORY, INC.
发明人
HUNTER RICHARD S.
分类号
G01N21/27;G01N21/57
主分类号
G01N21/27
代理机构
代理人
主权项
地址
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