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发明名称
Optical arrangement for determining the ratio of two light fluxes
摘要
申请公布号
US2849912(A)
申请公布日期
1958.09.02
申请号
US19550554117
申请日期
1955.11.21
申请人
CARL ZEISS
发明人
PLESSE HANS;FRANKE HEINZ
分类号
G01J1/36;G01N21/25
主分类号
G01J1/36
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代理人
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