GB1222697A - Improvements in or relating to arithmetical apparatus - Google Patents

Improvements in or relating to arithmetical apparatus

Info

Publication number
GB1222697A
GB1222697A GB3005668A GB3005668A GB1222697A GB 1222697 A GB1222697 A GB 1222697A GB 3005668 A GB3005668 A GB 3005668A GB 3005668 A GB3005668 A GB 3005668A GB 1222697 A GB1222697 A GB 1222697A
Authority
GB
United Kingdom
Prior art keywords
sheet
results
arithmetical
series
relating
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
GB3005668A
Inventor
Vernon John Curtis
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to GB3005668A priority Critical patent/GB1222697A/en
Publication of GB1222697A publication Critical patent/GB1222697A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B19/00—Teaching not covered by other main groups of this subclass
    • G09B19/02—Counting; Calculating
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C3/00—Arrangements for table look-up, e.g. menstruation table

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • Toys (AREA)

Abstract

1,222,697. Educational appliances. V. J. CURTIS. 24 June, 1969 [24 June, 1968], No. 30056/68. Heading G5G. An arithmetical apparatus comprises a first sheet 10 bearing a number 12 and a series of results 14 to an arithmetical process involving the number 12 and any one of a group of numbers such as the number " 6 " on the second sheet 15, the second sheet 15 being placed on top of the sheet 10 and having indicating means 17 which indicates the correct result in the series of results 14. The series of results 14 is printed on translucent material so that the results are readily seen when illuminated on the opposite side of the translucent material.
GB3005668A 1968-06-24 1968-06-24 Improvements in or relating to arithmetical apparatus Expired GB1222697A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3005668A GB1222697A (en) 1968-06-24 1968-06-24 Improvements in or relating to arithmetical apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3005668A GB1222697A (en) 1968-06-24 1968-06-24 Improvements in or relating to arithmetical apparatus

Publications (1)

Publication Number Publication Date
GB1222697A true GB1222697A (en) 1971-02-17

Family

ID=10301544

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3005668A Expired GB1222697A (en) 1968-06-24 1968-06-24 Improvements in or relating to arithmetical apparatus

Country Status (1)

Country Link
GB (1) GB1222697A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2349264A (en) * 1999-02-06 2000-10-25 Egmont World Limited Apparatus for playing a game

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2349264A (en) * 1999-02-06 2000-10-25 Egmont World Limited Apparatus for playing a game

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