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2834246
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Information
Patent Grant
2834246
References
Source
Patent Number
2,834,246
Date Filed
Not available
Date Issued
Tuesday, May 13, 1958
66 years ago
CPC
G01J3/433 - Modulation spectrometry Derivative spectrometry
G01N21/314 - with comparison of measurements at specific and non-specific wavelengths
G01J2003/4332 - frequence-modulated
US Classifications
356 - Optics: measuring and testing
250 - Radiant energy
315 - Electric lamp and discharge devices: systems
359 - Optical: systems and elements
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