GB646294A - Optical map projection apparatus - Google Patents

Optical map projection apparatus

Info

Publication number
GB646294A
GB646294A GB26845/47A GB2684547A GB646294A GB 646294 A GB646294 A GB 646294A GB 26845/47 A GB26845/47 A GB 26845/47A GB 2684547 A GB2684547 A GB 2684547A GB 646294 A GB646294 A GB 646294A
Authority
GB
United Kingdom
Prior art keywords
projection apparatus
map projection
optical map
optical
projection
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
GB26845/47A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB646294A publication Critical patent/GB646294A/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
GB26845/47A 1939-09-01 1947-10-06 Optical map projection apparatus Expired GB646294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR646294X 1939-09-01

Publications (1)

Publication Number Publication Date
GB646294A true GB646294A (en) 1950-11-22

Family

ID=9001334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26845/47A Expired GB646294A (en) 1939-09-01 1947-10-06 Optical map projection apparatus

Country Status (1)

Country Link
GB (1) GB646294A (en)

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