FR468818A - Ardoise arithmétique - Google Patents

Ardoise arithmétique

Info

Publication number
FR468818A
FR468818A FR468818DA FR468818A FR 468818 A FR468818 A FR 468818A FR 468818D A FR468818D A FR 468818DA FR 468818 A FR468818 A FR 468818A
Authority
FR
France
Prior art keywords
slate
arithmetic
arithmetic slate
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)
Inventor
Fritz Brack
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FRITZ BRACK
Original Assignee
FRITZ BRACK
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 by FRITZ BRACK filed Critical FRITZ BRACK
Application granted granted Critical
Publication of FR468818A publication Critical patent/FR468818A/fr
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)
FR468818D 1914-02-23 1914-02-23 Ardoise arithmétique Expired FR468818A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR468818T 1914-02-23

Publications (1)

Publication Number Publication Date
FR468818A true FR468818A (fr) 1914-07-17

Family

ID=1507329

Family Applications (1)

Application Number Title Priority Date Filing Date
FR468818D Expired FR468818A (fr) 1914-02-23 1914-02-23 Ardoise arithmétique

Country Status (1)

Country Link
FR (1) FR468818A (fr)

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