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G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
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FR56185D1946-04-171946-04-17Perfectionnements aux appareils d'éclairage indirect et semi-indirect
ExpiredFR56185E
(fr)