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发明名称
Optical system for spectral apparatus with fixed deviation
摘要
申请公布号
US2305776(A)
申请公布日期
1942.12.22
申请号
US19400364170
申请日期
1940.11.04
申请人
GERHARD HANSEN
发明人
HANSEN GERHARD
分类号
G01J3/14
主分类号
G01J3/14
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代理人
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