TREA

involving the optical projection of slides, microfilm or the like

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Industry

  • CPC
  • G09B29/104
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Parent Industries

GPHYSICS G09Cryptography, education, displays G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE MODELS PLANETARIA GLOBES MAPS DIAGRAMS G09B29/00Maps Plans Charts Diagrams

Current Industry

G09B29/104involving the optical projection of slides, microfilm or the like
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Microfilm map reader
    • Patent number 5,080,480
    • Issue date Jan 14, 1992
    • Israel Weiss
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Light-tight combination micrographic map-reader protractor compass
    • Patent number 4,594,788
    • Issue date Jun 17, 1986
    • Reuven A. Abergel
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Portable map display device
    • Patent number 4,437,739
    • Issue date Mar 20, 1984
    • Ball; Larry L.
    • John R. Haskin
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Projection device
    • Patent number 4,097,134
    • Issue date Jun 27, 1978
    • Hans G. Jerie
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    3805429
    • Patent number 3,805,429
    • Issue date Apr 23, 1974
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    2513072
    • Patent number 2,513,072
    • Issue date Jun 27, 1950
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2404988
    • Patent number 2,404,988
    • Issue date Jul 30, 1946
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2271296
    • Patent number 2,271,296
    • Issue date Jan 27, 1942
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2267649
    • Patent number 2,267,649
    • Issue date Dec 23, 1941
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    1457358
    • Patent number 1,457,358
    • Issue date Jun 5, 1923
    • F24 - HEATING RANGES VENTILATING