GB1296392A - - Google Patents

Info

Publication number
GB1296392A
GB1296392A GB1296392DA GB1296392A GB 1296392 A GB1296392 A GB 1296392A GB 1296392D A GB1296392D A GB 1296392DA GB 1296392 A GB1296392 A GB 1296392A
Authority
GB
United Kingdom
Prior art keywords
scale
logarithmic
jan
members
elms
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
Other languages
English (en)
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 filed Critical
Publication of GB1296392A publication Critical patent/GB1296392A/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

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)
  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • Drawing Aids And Blackboards (AREA)
GB1296392D 1969-01-28 1969-01-28 Expired GB1296392A (cs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB475869 1969-01-28

Publications (1)

Publication Number Publication Date
GB1296392A true GB1296392A (cs) 1972-11-15

Family

ID=9783219

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1296392D Expired GB1296392A (cs) 1969-01-28 1969-01-28

Country Status (1)

Country Link
GB (1) GB1296392A (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4518359A (en) * 1983-12-30 1985-05-21 Yao Psong Wang Multi-purpose instructing block
US5297965A (en) * 1993-04-12 1994-03-29 Manancero Sergio O Mathematical and spatial toy apparatus
GB2352864A (en) * 1999-08-03 2001-02-07 Rosemary Gillian Gregory Magnetic teaching aid.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4518359A (en) * 1983-12-30 1985-05-21 Yao Psong Wang Multi-purpose instructing block
US5297965A (en) * 1993-04-12 1994-03-29 Manancero Sergio O Mathematical and spatial toy apparatus
GB2352864A (en) * 1999-08-03 2001-02-07 Rosemary Gillian Gregory Magnetic teaching aid.
GB2352864B (en) * 1999-08-03 2004-04-07 Rosemary Gillian Gregory Teaching aid

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees