NL146647C - - Google Patents

Info

Publication number
NL146647C
NL146647C NL146647DA NL146647C NL 146647 C NL146647 C NL 146647C NL 146647D A NL146647D A NL 146647DA NL 146647 C NL146647 C NL 146647C
Authority
NL
Netherlands
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 NL146647C publication Critical patent/NL146647C/xx
Priority claimed from US78402447 external-priority patent/US2668877A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of dc pulses
    • H04Q1/34—Impulse regenerators with mechanical or other non-electrical marking arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
NL146647D 1947-11-04 NL146647C (zh)

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
NL146647C true NL146647C (zh)

Family

ID=25131115

Family Applications (3)

Application Number Title Priority Date Filing Date
NL146647D NL146647C (zh) 1947-11-04
NL141509D NL141509C (zh) 1947-11-04
NL72142D NL72142C (zh) 1947-11-04

Family Applications After (2)

Application Number Title Priority Date Filing Date
NL141509D NL141509C (zh) 1947-11-04
NL72142D NL72142C (zh) 1947-11-04

Country Status (3)

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

Also Published As

Publication number Publication date
NL141509C (zh)
NL72142C (zh)
BE484699A (zh)
FR969165A (fr) 1950-12-15

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