US3264510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Degassing of cathode ray tubes
Assignee: Individual
•
Filing: 1963-08-27
•
Granted: 1966-08-02
•
Expires: 1983-08-27
Abstract
No abstract record available.
Inventors
- 👤 Leighton E Griffiths
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:38
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/94
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
AN ELECTRON GUN ASSEMBLY FOR REPLACEMENT USE IN A CATHODE RAY TUBE HAVING A SCREEN FACE LIMITED TO A MAXIMUM TEMPERATURE OF 80 DEGREE C. WHEN DEGRASSING AND INCLUDING A FIRST GRID, IN THE FORM OF AN INVERTED METAL CUP, A CERAMIC DISC SECURED ACROSS SAID CUP INTERMEDIATE ITS LENGTH, A CATHODE CYLINDER EXTENDING AXIALLY THROUGH SAID DISC, A HEATER IN SAID CYLINDER, A METAL SLEEVE LARGER THAN SAID CYLINDER AND SMALLER THAN THE CUP SPACING THE DISC FROM THE CLOSED UPPER END OF THE CUP AND A STRIP OF GETTER METAL SECURED TO THE OUTER SURFACE OF SAID SLEEVE AND EFFECTIVE TO SORB GASES FROM THE CATHODE RAY TUBE INTERIOR AT THE TEMPERATURE OF WHICH IT IS HEATED BY THE SAID CATHODE CYLINDER HEATER.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |