FR1122655A - Educational road sign board - Google Patents

Educational road sign board

Info

Publication number
FR1122655A
FR1122655A FR1122655DA FR1122655A FR 1122655 A FR1122655 A FR 1122655A FR 1122655D A FR1122655D A FR 1122655DA FR 1122655 A FR1122655 A FR 1122655A
Authority
FR
France
Prior art keywords
educational
road sign
sign board
board
road
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
French (fr)
Inventor
Marcel Mairal
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 filed Critical
Application granted granted Critical
Publication of FR1122655A publication Critical patent/FR1122655A/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
    • G09B19/18—Book-keeping or economics
    • 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
    • G09B7/00—Electrically-operated teaching apparatus or devices working with questions and answers
    • G09B7/06—Electrically-operated teaching apparatus or devices working with questions and answers of the multiple-choice answer-type, i.e. where a given question is provided with a series of answers and a choice has to be made from the answers
    • G09B7/063—Electrically-operated teaching apparatus or devices working with questions and answers of the multiple-choice answer-type, i.e. where a given question is provided with a series of answers and a choice has to be made from the answers with hand-placed probe or plug

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Accounting & Taxation (AREA)
  • Development Economics (AREA)
  • Economics (AREA)
  • General Business, Economics & Management (AREA)
FR1122655D 1955-02-28 1955-02-28 Educational road sign board Expired FR1122655A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1122655T 1955-02-28

Publications (1)

Publication Number Publication Date
FR1122655A true FR1122655A (en) 1956-09-11

Family

ID=9632763

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1122655D Expired FR1122655A (en) 1955-02-28 1955-02-28 Educational road sign board

Country Status (1)

Country Link
FR (1) FR1122655A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775005A (en) * 1972-04-07 1973-11-27 Singer Co Interactive photographic transparency display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775005A (en) * 1972-04-07 1973-11-27 Singer Co Interactive photographic transparency display device

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