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Publication of FR44630EpublicationCriticalpatent/FR44630E/fr
F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V5/00—Refractors for light sources
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Engineering & Computer Science
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General Engineering & Computer Science
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FR44630D1932-12-091934-04-07Appareil de signalisation à feux multiples
ExpiredFR44630E
(fr)