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Alexis Ventre & Cie
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Alexis Ventre & Cie
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Application filed by Alexis Ventre & CiefiledCriticalAlexis Ventre & Cie
Application grantedgrantedCritical
Publication of FR574344ApublicationCriticalpatent/FR574344A/fr
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
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Business, Economics & Management
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Accounting & Taxation
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Marketing
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Physics & Mathematics
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General Physics & Mathematics
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Engineering & Computer Science
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Theoretical Computer Science
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FR574344D1923-11-091923-11-09Dispositif permettant l'inscription rapide d'un libellé quelconque et sa projection sur l'écran
ExpiredFR574344A
(fr)