GB0014950D0 - Self correcting abacus - Google Patents

Self correcting abacus

Info

Publication number
GB0014950D0
GB0014950D0 GB0014950A GB0014950A GB0014950D0 GB 0014950 D0 GB0014950 D0 GB 0014950D0 GB 0014950 A GB0014950 A GB 0014950A GB 0014950 A GB0014950 A GB 0014950A GB 0014950 D0 GB0014950 D0 GB 0014950D0
Authority
GB
United Kingdom
Prior art keywords
abacus
self correcting
correcting
self
correcting abacus
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.)
Granted
Application number
GB0014950A
Other versions
GB2364412A (en
GB2364412B (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.)
STONE CELIA S
Original Assignee
STONE CELIA S
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 STONE CELIA S filed Critical STONE CELIA S
Priority to GB0014950A priority Critical patent/GB2364412B/en
Publication of GB0014950D0 publication Critical patent/GB0014950D0/en
Publication of GB2364412A publication Critical patent/GB2364412A/en
Application granted granted Critical
Publication of GB2364412B publication Critical patent/GB2364412B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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

Landscapes

  • Business, Economics & Management (AREA)
  • Engineering & Computer Science (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
GB0014950A 2000-06-20 2000-06-20 Abacus Expired - Fee Related GB2364412B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0014950A GB2364412B (en) 2000-06-20 2000-06-20 Abacus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0014950A GB2364412B (en) 2000-06-20 2000-06-20 Abacus

Publications (3)

Publication Number Publication Date
GB0014950D0 true GB0014950D0 (en) 2000-08-09
GB2364412A GB2364412A (en) 2002-01-23
GB2364412B GB2364412B (en) 2004-01-21

Family

ID=9893937

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0014950A Expired - Fee Related GB2364412B (en) 2000-06-20 2000-06-20 Abacus

Country Status (1)

Country Link
GB (1) GB2364412B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110189591A (en) * 2019-06-26 2019-08-30 河南水利与环境职业学院 A kind of mathematics teaching aid for mathematical thinking training

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060228680A1 (en) * 2003-06-03 2006-10-12 Joan Cotter Overhead abacus
GB2434992A (en) * 2006-02-09 2007-08-15 Ronald William Goodman A numeracy game

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB587220A (en) * 1944-12-22 1947-04-17 Lancelot Hogben Apparatus for the use in the teaching of arithmetic operations
GB1246436A (en) * 1970-05-20 1971-09-15 William Emerson Stults Improved game or teaching aid
GB2111268A (en) * 1981-09-11 1983-06-29 Dennis Richard Quilter Abacus
US4812124A (en) * 1988-02-19 1989-03-14 Lawrence A. Clopper Hexadecimal abacus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110189591A (en) * 2019-06-26 2019-08-30 河南水利与环境职业学院 A kind of mathematics teaching aid for mathematical thinking training

Also Published As

Publication number Publication date
GB2364412A (en) 2002-01-23
GB2364412B (en) 2004-01-21

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20190620