DE242686C - - Google Patents

Info

Publication number
DE242686C
DE242686C DENDAT242686D DE242686DA DE242686C DE 242686 C DE242686 C DE 242686C DE NDAT242686 D DENDAT242686 D DE NDAT242686D DE 242686D A DE242686D A DE 242686DA DE 242686 C DE242686 C DE 242686C
Authority
DE
Germany
Prior art keywords
bodies
shaft
tens
calculators
units
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
DENDAT242686D
Other languages
German (de)
English (en)
Publication of DE242686C publication Critical patent/DE242686C/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)
  • Displays For Variable Information Using Movable Means (AREA)
DENDAT242686D Active DE242686C (cs)

Publications (1)

Publication Number Publication Date
DE242686C true DE242686C (cs)

Family

ID=501872

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT242686D Active DE242686C (cs)

Country Status (1)

Country Link
DE (1) DE242686C (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556501A (en) * 1940-12-27 1951-06-12 Limyr Gunnar Alfred Calculating frame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556501A (en) * 1940-12-27 1951-06-12 Limyr Gunnar Alfred Calculating frame

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