NL7114522A - - Google Patents

Info

Publication number
NL7114522A
NL7114522A NL7114522A NL7114522A NL7114522A NL 7114522 A NL7114522 A NL 7114522A NL 7114522 A NL7114522 A NL 7114522A NL 7114522 A NL7114522 A NL 7114522A NL 7114522 A NL7114522 A NL 7114522A
Authority
NL
Netherlands
Application number
NL7114522A
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 NL7114522A publication Critical patent/NL7114522A/xx

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
    • G09B1/00—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways
    • G09B1/02—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements
    • G09B1/16—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a plurality of different symbols, signs, or combinations of symbols and signs, only one symbol, sign, or combination thereof, of each element to be used at a time
    • G09B1/28—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a plurality of different symbols, signs, or combinations of symbols and signs, only one symbol, sign, or combination thereof, of each element to be used at a time the elements being slidable

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Toys (AREA)
  • Displays For Variable Information Using Movable Means (AREA)
  • Electrically Operated Instructional Devices (AREA)
  • Drawing Aids And Blackboards (AREA)
NL7114522A 1970-10-23 1971-10-21 NL7114522A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5040170 1970-10-23

Publications (1)

Publication Number Publication Date
NL7114522A true NL7114522A (fr) 1972-04-25

Family

ID=10455773

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7114522A NL7114522A (fr) 1970-10-23 1971-10-21

Country Status (9)

Country Link
US (1) US3757433A (fr)
AU (1) AU3483171A (fr)
CH (1) CH539312A (fr)
DE (1) DE2152516A1 (fr)
FR (1) FR2113361A5 (fr)
GB (1) GB1313557A (fr)
IE (1) IE35730B1 (fr)
IT (1) IT939643B (fr)
NL (1) NL7114522A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002300618B2 (en) * 2001-08-20 2006-12-21 Keith Evan Jones Word builder
US6769914B2 (en) 2002-11-01 2004-08-03 Kalyani Sundararajan Arithmetic teaching device
US20100216101A1 (en) * 2009-02-25 2010-08-26 Jarom Chung Method and device for teaching and/or calculating mathematics
US11450234B2 (en) * 2018-02-26 2022-09-20 Teresa A. Talbott Binary counting device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1094570A (en) * 1909-12-08 1914-04-28 Arthur E Jacobs Spelling-board.
US1006711A (en) * 1911-01-14 1911-10-24 Silas I Atwater Tablet.
US1286157A (en) * 1917-08-08 1918-11-26 Hermilio Manuel Vizcarra Educational apparatus.

Also Published As

Publication number Publication date
DE2152516A1 (de) 1972-05-04
FR2113361A5 (fr) 1972-06-23
US3757433A (en) 1973-09-11
GB1313557A (en) 1973-04-11
AU3483171A (en) 1973-05-03
IT939643B (it) 1973-02-10
CH539312A (fr) 1973-07-15
IE35730L (en) 1972-04-23
IE35730B1 (en) 1976-05-12

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