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H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
H04N3/04—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving aperture also apertures covered by lenses
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FR696169D1930-05-271930-05-27Dispositif pour scander dans la télévision
ExpiredFR696169A
(fr)