BE452260A - - Google Patents

Info

Publication number
BE452260A
BE452260A BE452260DA BE452260A BE 452260 A BE452260 A BE 452260A BE 452260D A BE452260D A BE 452260DA BE 452260 A BE452260 A BE 452260A
Authority
BE
Belgium
Prior art keywords
holes
side wall
plugs
cards
box
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE452260A publication Critical patent/BE452260A/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Sheet Holders (AREA)
BE452260D BE452260A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
BE452260A true BE452260A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=106917

Family Applications (1)

Application Number Title Priority Date Filing Date
BE452260D BE452260A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
BE (1) BE452260A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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