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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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FR56367D1946-08-061946-08-06Perfectionnements aux appareils d'éclairage indirect et semin-direct
ExpiredFR56367E
(fr)