Patent US2449339A successfully refreshed from Google Patents.
US2449339A
Expired / Lapsed
US
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Cathode-ray tube
Assignee: RCA Corp
•
Filing: 1945-11-13
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Granted: 1948-09-14
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Expires: 1965-11-13
Abstract
No abstract record available.
Inventors
- 👤 George C Sziklai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:52
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19535
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2118865A
Cited
US2111941A
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US2259506A
Cited
GB494145A
Cited
US2179205A
Cited
US2220688A
Cited
US2114572A
Cited
GB513099A
Cited
US2332622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-14 | 1952-03-15 | 1952-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-14 | 1956-03-15 | 1956-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-14 | 1960-03-15 | 1960-09-14 | $7700.00 | Window Closed / Lapsed |