FR523083A - Improvements to teaching boards - Google Patents

Improvements to teaching boards

Info

Publication number
FR523083A
FR523083A FR523083A FR523083DA FR523083A FR 523083 A FR523083 A FR 523083A FR 523083 A FR523083 A FR 523083A FR 523083D A FR523083D A FR 523083DA FR 523083 A FR523083 A FR 523083A
Authority
FR
France
Prior art keywords
teaching boards
teaching
boards
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
FR523083A
Other languages
French (fr)
Inventor
Prosper-Alphonse Dewit
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.)
PROSPER ALPHONSE DEWIT
Original Assignee
PROSPER ALPHONSE DEWIT
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 PROSPER ALPHONSE DEWIT filed Critical PROSPER ALPHONSE DEWIT
Application granted granted Critical
Publication of FR523083A publication Critical patent/FR523083A/en
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)
FR523083A 1920-08-26 1920-08-26 Improvements to teaching boards Expired FR523083A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR523083T 1920-08-26

Publications (1)

Publication Number Publication Date
FR523083A true FR523083A (en) 1921-08-11

Family

ID=8918363

Family Applications (1)

Application Number Title Priority Date Filing Date
FR523083A Expired FR523083A (en) 1920-08-26 1920-08-26 Improvements to teaching boards

Country Status (1)

Country Link
FR (1) FR523083A (en)

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