US2520240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-ray tube
Assignee: RCA Corp
•
Filing: 1946-09-05
•
Granted: 1950-08-29
•
Expires: 1966-09-05
Abstract
No abstract record available.
Inventors
- 👤 Leslie E Flory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:04
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/34; H01J31/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2288402A
Cited
US2412086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |