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Application filed by Eissfeldt WernerfiledCriticalEissfeldt Werner
Publication of BE778131ApublicationCriticalpatent/BE778131A/fr
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/14—Details
G03B21/32—Details specially adapted for motion-picture projection
G03B21/43—Driving mechanisms
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Replacement Of Web Rolls
(AREA)
BE778131A1971-01-181972-01-17Dispositif a memoire pour bandes porteuses d'informations, telles que films, bandes magnetiques etc...
BE778131A
(fr)
Dispositif pour la comparaison rapide, avec une calculatrice numérique, d'un ensemble de mots d'information avec un mot de référence ou avec un autre ensemble de mots