DE137364C - - Google Patents

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Publication number
DE137364C
DE137364C DENDAT137364D DE137364DA DE137364C DE 137364 C DE137364 C DE 137364C DE NDAT137364 D DENDAT137364 D DE NDAT137364D DE 137364D A DE137364D A DE 137364DA DE 137364 C DE137364 C DE 137364C
Authority
DE
Germany
Prior art keywords
tongues
field
pictures
visible
numbers
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.)
Active
Application number
DENDAT137364D
Other languages
German (de)
English (en)
Publication of DE137364C publication Critical patent/DE137364C/de
Active 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

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  • 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)
  • Toys (AREA)
DENDAT137364D Active DE137364C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE137364C true DE137364C (enrdf_load_stackoverflow)

Family

ID=405252

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT137364D Active DE137364C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE137364C (enrdf_load_stackoverflow)

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