US2758244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam tubes
Assignee: RCA Corp
•
Filing: 1952-06-02
•
Granted: 1956-08-07
•
Expires: 1972-06-02
Abstract
No abstract record available.
Inventors
- 👤 Wellesley J Dodds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:19
CPC Classifications
H; H03; H03H; H03H2/00; H03H2/005; H03H2/006; H01; H01J; H01J23/00; H01J23/36; H01J23/40; H01J23/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21739E
Cited
US2238770A
Cited
US2575383A
Cited
US2584802A
Cited
US2516944A
Cited
US2623129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |