US3377500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat cathode-ray display tube
Assignee: Fairchild Semiconductor Corp
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Filing: 1966-06-20
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Granted: 1968-04-09
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Expires: 1986-06-20
Abstract
No abstract record available.
Inventors
- 👤 Burns Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:59
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/124
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A FLAT CATHODE-RAY DISPLAY TUBE COMPRISING AN ENVELOPE INCLUDING A BODY PORTION OF SUBSTANTIALLY PARALLELEPIPED CONFIGURATION HAVING A THICKNESS WHICH IS A MINOR FRACTION OF ITS LENGTH AND WIDTH AND A TAPERED TUBULAR NECK PORTION EXTENDING THEREFROM WITH ITS AXIS LYING APPROXIMATELY IN THE MEDIAN PLANE OF SAID BODY PORTION; A TRANSPARENT CONDUCTIVE FILM AND A PHOSPHORESCENT SCREEN DISPOSED ON ONE OF THE MAJOR WALLS OF SAID BODY PORTION; A SCREEN ELECTRODE ADJACENT SAID FILM, SAID FILM BEING DESIGNED AND INTENDED TO OPERATE AT A POTENTIAL SUBSTANTIALLY HIGHER THAN SAID SCREEN ELECTRODE; MEANS INCLUDING SAID SCREEN ELECTRODE FOR ESTABLISHING AN ELECTRIC FIELD SUBSTANTIALLY THROUGHOUT SAID BODY PORTION; MEANS IN SAID NECK PORTION FOR DEVELOPING AND INJECTING A CATHODE-RAY BEAM INTO THE ELECTRIC FIELD REGION; AND MEANS FOR DEFLECTING SAID BEAM IN TWO ORTHOGONAL DIRECTIONS PRIOR TO INJECTION INTO SAID REGION TO SCAN A RASTER ON SAID SCREEN ELECTRODE AND ON SAID PHOSPHORESCENT SCREEN.
Claim 2
Dependent Claim
153 words
A FLAT CATHODE-RAY DISPLAY TUBE COMPRISING AN ENVELOPE INCLUDING A BODY PORTION OF SUBSTANTIALLY PARALLELEPIPED CONFIGURATION HAVING A THICKNESS WHICH IS A MINOR FRACTION OF ITS LENGTH AND WIDTH AND A TAPERED TUBULAR NECK PORTION EXTENDING THEREFROM WITH ITS AXIS LYING APPROXIMATELY IN THE MEDIAN PLANE OF SAID BODY PORTION; A TRANSPARENT CONDUCTIVE FILM AND A PHOSPHORESCENT SCREEN DISPOSED ON ONE OF THE MAJOR WALLS OF SAID BODY PORTION; A SCREEN ELECTRODE ADJACENT SAID FILM, SAID FILM BEING DESIGNED AND INTENDED TO OPERATE AT A POTENTIAL SUBSTANTIALLY HIGHER THAN SAID SCREEN ELECTRODE; MEANS INCLUDING SAID SCREEN ELECTRODE FOR ESTABLISHING AN ELECTRIC FIELD SUBSTANTIALLY THROUGHOUT SAID BODY PORTION; MEANS IN SAID NECK PORTION FOR DEVELOPING AND INJECTING A CATHODE-RAY BEAM INTO THE ELECTRIC FIELD REGION; AND MEANS FOR DEFLECTING SAID BEAM IN TWO ORTHOGONAL DIRECTIONS PRIOR TO INJECTION INTO SAID REGION TO SCAN A RASTER ON SAID SCREEN ELECTRODE AND ON SAID PHOSPHORESCENT SCREEN.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |