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US3090280A Expired / Lapsed US ⏱️ 0.0 years remaining

Means for producing a visual phenomenon for increasing contrast ratio

Assignee: Individual
•
Filing: 1959-09-02
•
Granted: 1963-05-21
•
Expires: 1979-09-02
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Abstract

No abstract record available.

Inventors

  • 👤 Jr Charles H Winter

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 14:09
CPC Classifications
G; G09; G09F; G09F15/00; G09F15/0006

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 155 words
A DISPLAY ADAPTED TO ATTRACT VISUAL OBSERVATION COMPRISING A SURFACE HAVING AN IMAGE OF A SUBJECT FORMED THEREON, SAID SURFACE AND IMAGE BEING OVERALL ILLUMINATED BY A FIRST LIGHT SOURCE, AND A REPLICA OF AT LEAST A PORTION OF THE SAME IMAGE PROJECTED BY A SECOND LIGHT SOURCE ONTO THE SURFACE IS SUBSTANTIALLY EXACT REGISTRY WITH THE SAID PORTION OF THE IMAGE DURING THE ENTIRE PERIOD OF TIME THAT THE DISPLAY IS TO BE VISUALLY OBSERVED AND WHILE SAID IMAGE IS ILLUMINATED BY THE FIRST LIGHT SOURCE, SAID REPLICA BEING OBTAINED BY PHOTOGRAPHING THE CORRESPONDING PORTION OF ONE OF SAID SUBJECT AND IMAGE FROM A SELECTED POSITION TO OBTAIN A NEGATIVE AND PROJECTING SAID REPLICA FROM RELATIVELY SAID SELECTED POSITION ONTO THE IMAGE THROUGH A POSITIVE TRANSPARENCY MADE FROM SAID NEGATIVE, WHEREBY TO MARKEDLY IMPROVE THE VIVIDNESS OF COLORS, GREATLY INCREASE THE CONTRAST RATIO OF SAID PORTION OF THE IMAGE AND GREATLY REDUCED SURFACE GLARE.
Claim 2
Dependent Claim 155 words
A DISPLAY ADAPTED TO ATTRACT VISUAL OBSERVATION COMPRISING A SURFACE HAVING AN IMAGE OF A SUBJECT FORMED THEREON, SAID SURFACE AND IMAGE BEING OVERALL ILLUMINATED BY A FIRST LIGHT SOURCE, AND A REPLICA OF AT LEAST A PORTION OF THE SAME IMAGE PROJECTED BY A SECOND LIGHT SOURCE ONTO THE SURFACE IS SUBSTANTIALLY EXACT REGISTRY WITH THE SAID PORTION OF THE IMAGE DURING THE ENTIRE PERIOD OF TIME THAT THE DISPLAY IS TO BE VISUALLY OBSERVED AND WHILE SAID IMAGE IS ILLUMINATED BY THE FIRST LIGHT SOURCE, SAID REPLICA BEING OBTAINED BY PHOTOGRAPHING THE CORRESPONDING PORTION OF ONE OF SAID SUBJECT AND IMAGE FROM A SELECTED POSITION TO OBTAIN A NEGATIVE AND PROJECTING SAID REPLICA FROM RELATIVELY SAID SELECTED POSITION ONTO THE IMAGE THROUGH A POSITIVE TRANSPARENCY MADE FROM SAID NEGATIVE, WHEREBY TO MARKEDLY IMPROVE THE VIVIDNESS OF COLORS, GREATLY INCREASE THE CONTRAST RATIO OF SAID PORTION OF THE IMAGE AND GREATLY REDUCED SURFACE GLARE.

References Cited (Backward Citations)

US1102903A Cited
GB160512A Cited
US1456954A Cited
US1596458A Cited
US1869275A Cited
US2207919A Cited
US2374981A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1966-05-20 1966-11-19 1967-05-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1970-05-20 1970-11-19 1971-05-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1974-05-20 1974-11-19 1975-05-21 $7700.00 Window Closed / Lapsed

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