Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filedfiledCritical
Publication of LU47783A1publicationCriticalpatent/LU47783A1/xx
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
G06K21/08—Apparatus or tools for correcting punching or slotting errors and regeneration of record carriers
G06K21/085—Apparatus or tools for correcting punching or slotting errors and regeneration of record carriers for punched tapes