after modulation by a grating, mask or the like

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Industry

CPC
H04N2201/04746

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Parent Industries

HELECTRICITY H04Electric communication H04NPICTORIAL COMMUNICATION H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof

Current Industry

H04N2201/04746after modulation by a grating, mask or the like

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