Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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CIAIS ROGER
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CIAIS ROGER
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Application filed by CIAIS ROGERfiledCriticalCIAIS ROGER
Priority to FR7114588ApriorityCriticalpatent/FR2139611B1/fr
Publication of FR2139611A1publicationCriticalpatent/FR2139611A1/fr
Application grantedgrantedCritical
Publication of FR2139611B1publicationCriticalpatent/FR2139611B1/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