US3215776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television set with ambient light trapping filter
Assignee: Douglas Aircraft Co Inc
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Filing: 1963-04-29
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Granted: 1965-11-02
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Vern E Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:36
CPC Classifications
G; G02; G02B; G02B5/00; H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/896; H01J2229/00; H01J2229/89; H01J2229/8913; H01J2229/8922
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
TELEVISION VIEWING APPARATUS COMPRISING: A HOUSING HAVING A LONGITUDINAL AXIS EXTENDING IN A SUBSTANTIALLY HORIZONTAL DIRECTION, SAID HOUSING HAVING AN OPEN FORWARD END; A VIEWING MEANS INCLUDIN A DIFFUSE RADIANT SCREEN MOUNTED IN SAID HOUSING AND ARRANGED TO EMIT IMAGE SIGNALS OUT OF SID FORWARD END; AND A GENERALLY PLANAR SPACE-LATTICE TYPE AMBIENT LIGHT TRAPPING FILTER HAVING DEPTWISE DIRECTED VIEWING CELLS MOUNTED IN PROXIMITY TO THE FORWARD WALL OF SAID SCREEN; TEH UPPER PORTION OF SAID FILTER BEING FORWARD OF THE LOWER PORTION THEREOF; AND THE AXES OF THE VIEWING CELLS BEING SUBSTANTIALLY PARALLE TO EACH OTHER AND DIRECTED UPWARDLY AND OUTWARDLY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |