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.)
D INSTR DE PREC SOC IND
Original Assignee
D INSTR DE PREC SOC IND
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 D INSTR DE PREC SOC INDfiledCriticalD INSTR DE PREC SOC IND
Application grantedgrantedCritical
Publication of FR844464ApublicationCriticalpatent/FR844464A/fr
G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
G06K5/00—Methods or arrangements for verifying the correctness of markings on a record carrier; Column detection devices
G06K5/02—Methods or arrangements for verifying the correctness of markings on a record carrier; Column detection devices the verifying forming a part of the marking action
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Theoretical Computer Science
(AREA)
FR844464D1938-04-061938-04-06Perfectionnements aux machines à perforer les cartes utilisées dans les machines statistiques et comptables
ExpiredFR844464A
(fr)