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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 filed by International Business Machines CorpfiledCriticalInternational Business Machines Corp
Application grantedgrantedCritical
Publication of FR763726ApublicationCriticalpatent/FR763726A/fr
FR763726D1932-11-141933-11-13Trieuse de cartes perforées avec dispositif pour l'élimination des cartes comportant une fausse perforation
ExpiredFR763726A
(fr)
Perfectionnements apportés aux procédés pour préparer des documents pour statistiques et aux dispositifs pour explorer ou interpréter les indications portées par ces documents