G06K 21/00

Information retrieval from punched cards designed for manual use or handling by

Official title: Information retrieval from punched cards designed for manual use or handling by machine (G06K19/00 takes precedence; detection or correction of errors by rescanning patterns G06V10/98; checking correct operation of card-conveying mechanisms G06K13/06); Apparatus for handling such cards, e.g. marking or correcting

G06K21/00 (Information retrieval from punched cards designed for manual use or handling by) appears on 31 US grants and 5 published applications in this corpus.

Search patents in G06K
Granted patents
31
Published applications
5
Assignees
21
Inventors
45
Latest grant
30 Apr 2019

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