G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
G09F23/00—Advertising on or in specific articles, e.g. ashtrays, letter-boxes
G09F23/02—Advertising on or in specific articles, e.g. ashtrays, letter-boxes the advertising matter being displayed by the operation of the article
G09F23/04—Advertising on or in specific articles, e.g. ashtrays, letter-boxes the advertising matter being displayed by the operation of the article illuminated
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Theoretical Computer Science
(AREA)
Liquid Crystal Substances
(AREA)
Diaphragms For Electromechanical Transducers
(AREA)
Shielding Devices Or Components To Electric Or Magnetic Fields
(AREA)