by optical-mechanical means only (H04N3/36 takes precedence)

Full Title

Scanning details of television systems; Combination thereof with generation of supply voltages > by optical-mechanical means only (H04N3/36 takes precedence)

Child Classifications

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• H04N 3/04 having a moving aperture
• H04N 3/06 having a moving lens or other refractor
• H04N 3/08 having a moving reflector