BE484699A - - Google Patents

Info

Publication number
BE484699A
BE484699A BE484699DA BE484699A BE 484699 A BE484699 A BE 484699A BE 484699D A BE484699D A BE 484699DA BE 484699 A BE484699 A BE 484699A
Authority
BE
Belgium
Application number
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.)
Publication of BE484699A publication Critical patent/BE484699A/xx
Priority claimed from US78402447 external-priority patent/US2668877A/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements
    • H04Q1/18Electrical details
    • H04Q1/30Signalling arrangements; Manipulation of signalling currents
    • H04Q1/32Signalling arrangements; Manipulation of signalling currents using trains of dc pulses
    • H04Q1/34Impulse regenerators with mechanical or other non-electrical marking arrangements
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K21/00Information retrieval from punched cards designed for manual use or handling by machine; Apparatus for handling such cards, e.g. marking or correcting
    • G06K21/04Information 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
BE484699D 1947-11-04 BE484699A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78402447 US2668877A (en) 1947-11-04 1947-11-04 Electromechanical translator

Publications (1)

Publication Number Publication Date
BE484699A true BE484699A (fr)

Family

ID=25131115

Family Applications (1)

Application Number Title Priority Date Filing Date
BE484699D BE484699A (fr) 1947-11-04

Country Status (3)

Country Link
BE (1) BE484699A (fr)
FR (1) FR969165A (fr)
NL (3) NL72142C (fr)

Also Published As

Publication number Publication date
NL72142C (fr)
NL146647C (fr)
NL141509C (fr)
FR969165A (fr) 1950-12-15

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