US2969474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kinescope screen for daylight viewing
Assignee: Westinghouse Electric Corp
•
Filing: 1956-03-19
•
Granted: 1961-01-24
•
Expires: 1976-03-19
Abstract
No abstract record available.
Inventors
- 👤 William L Roberts
- 👤 Elmer B Ashcraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:46
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/14; H04; H04N; H04N9/00; H04N9/12; H04N9/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2330171A
Cited
US2454488A
Cited
US2418779A
Cited
US2479458A
Cited
GB720532A
Cited
US2684885A
Cited
US2819332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |