GB1444922A - Information retrieval system - Google Patents

Information retrieval system

Info

Publication number
GB1444922A
GB1444922A GB3657973A GB3657973A GB1444922A GB 1444922 A GB1444922 A GB 1444922A GB 3657973 A GB3657973 A GB 3657973A GB 3657973 A GB3657973 A GB 3657973A GB 1444922 A GB1444922 A GB 1444922A
Authority
GB
United Kingdom
Prior art keywords
cards
card
magnet
carriage
notches
Prior art date
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.)
Expired
Application number
GB3657973A
Other languages
English (en)
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.)
Gakken Holdings Co Ltd
Original Assignee
Gakken Co Ltd
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
Priority claimed from JP47083225A external-priority patent/JPS5242079B2/ja
Priority claimed from JP9509472A external-priority patent/JPS534439B2/ja
Priority claimed from JP10781772A external-priority patent/JPS5069821A/ja
Application filed by Gakken Co Ltd filed Critical Gakken Co Ltd
Publication of GB1444922A publication Critical patent/GB1444922A/en
Expired legal-status Critical Current

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
    • G06K21/002—Selecting of marginally notched cards

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Sheet Holders (AREA)
  • Credit Cards Or The Like (AREA)
GB3657973A 1972-08-19 1973-08-01 Information retrieval system Expired GB1444922A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP47083225A JPS5242079B2 (enExample) 1972-08-19 1972-08-19
JP9509472A JPS534439B2 (enExample) 1972-09-25 1972-09-25
JP10781772A JPS5069821A (enExample) 1971-10-27 1972-10-27

Publications (1)

Publication Number Publication Date
GB1444922A true GB1444922A (en) 1976-08-04

Family

ID=27304160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3657973A Expired GB1444922A (en) 1972-08-19 1973-08-01 Information retrieval system

Country Status (4)

Country Link
US (1) US3853224A (enExample)
DE (1) DE2341668C3 (enExample)
FR (1) FR2196729A5 (enExample)
GB (1) GB1444922A (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2055494A (en) * 1979-07-30 1981-03-04 Omex Magnetically retrievable optical memory
US4327834A (en) * 1980-08-01 1982-05-04 O. K. Partnership Document retrieval system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206269A (en) * 1962-09-04 1965-09-14 Albert L Curtis Card selector
US3273566A (en) * 1962-10-17 1966-09-20 Bell & Howell Co File card retrieval device
US3524545A (en) * 1968-04-30 1970-08-18 George J Doundoulakis Apparatus for random filing and retrieval of codes items
US3608714A (en) * 1970-05-13 1971-09-28 Eastman Kodak Co Information storage and retrieval system

Also Published As

Publication number Publication date
FR2196729A5 (enExample) 1974-03-15
DE2341668C3 (de) 1980-10-02
DE2341668A1 (de) 1974-02-28
DE2341668B2 (de) 1980-02-07
US3853224A (en) 1974-12-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930731