DE226164C - - Google Patents

Info

Publication number
DE226164C
DE226164C DENDAT226164D DE226164DA DE226164C DE 226164 C DE226164 C DE 226164C DE NDAT226164 D DENDAT226164 D DE NDAT226164D DE 226164D A DE226164D A DE 226164DA DE 226164 C DE226164 C DE 226164C
Authority
DE
Germany
Prior art keywords
boards
board
dots
spots
vertical
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
DENDAT226164D
Other languages
German (de)
English (en)
Publication of DE226164C publication Critical patent/DE226164C/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

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)
  • Electrically Operated Instructional Devices (AREA)
DENDAT226164D Active DE226164C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE226164C true DE226164C (enrdf_load_stackoverflow)

Family

ID=486738

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT226164D Active DE226164C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE226164C (enrdf_load_stackoverflow)

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