FR25851E - Procédé et appareil pour la production d'images ou d'inscriptions lumineuses et leur application à la publicité et à la cinématographie
- Google Patents
Procédé et appareil pour la production d'images ou d'inscriptions lumineuses et leur application à la publicité et à la cinématographie
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G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
G09F19/00—Advertising or display means not otherwise provided for
G09F19/12—Advertising or display means not otherwise provided for using special optical effects
G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
Landscapes
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FR25851D1920-08-031920-08-03Procédé et appareil pour la production d'images ou d'inscriptions lumineuses et leur application à la publicité et à la cinématographie
ExpiredFR25851E
(fr)