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Browse by Category: Main > Optical & Optics
Class Information
Number: 356/922
Name: Optics: measuring and testing > Photometry, e.g., photographic exposure meter (go1j 11/04)

Patents under this class:

Patent Number Title Of Patent Date Issued
8334495 Photometric device including a photoelectric conversion element for detecting illuminance of light Dec. 18, 2012

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