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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Priority to FR7111858ApriorityCriticalpatent/FR2101397A5/fr
Application grantedgrantedCritical
Publication of FR2101397A5publicationCriticalpatent/FR2101397A5/fr
G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
G06K21/00—Information retrieval from punched cards designed for manual use or handling by machine; Apparatus for handling such cards, e.g. marking or correcting
G06K21/04—Information retrieval from punched cards designed for manual use or handling by machine; Apparatus for handling such cards, e.g. marking or correcting in which coincidence of markings is sensed optically, e.g. peek-a-boo system