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G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
G09F13/00—Illuminated signs; Luminous advertising
G09F13/24—Illuminated signs; Luminous advertising using tubes or the like filled with liquid, e.g. bubbling liquid
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FR722607D1931-02-191931-08-21Perfectionnements concernant des méthodes ou des dispositifs pour la production d'éclairages de différentes couleurs
ExpiredFR722607A
(fr)