FR664843A - Improvements to indicator plans - Google Patents

Improvements to indicator plans

Info

Publication number
FR664843A
FR664843A FR664843DA FR664843A FR 664843 A FR664843 A FR 664843A FR 664843D A FR664843D A FR 664843DA FR 664843 A FR664843 A FR 664843A
Authority
FR
France
Prior art keywords
plans
indicator
indicator plans
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
Charles Welfling
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 FR664843A publication Critical patent/FR664843A/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
    • G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
    • G09B29/10—Map spot or coordinate position indicators; Map reading aids
    • G09B29/102—Map spot or coordinate position indicators; Map reading aids using electrical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
FR664843D 1928-11-29 1928-11-29 Improvements to indicator plans Expired FR664843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR664843T 1928-11-29

Publications (1)

Publication Number Publication Date
FR664843A true FR664843A (en) 1929-09-09

Family

ID=9012916

Family Applications (1)

Application Number Title Priority Date Filing Date
FR664843D Expired FR664843A (en) 1928-11-29 1928-11-29 Improvements to indicator plans

Country Status (1)

Country Link
FR (1) FR664843A (en)

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