US2708249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra high frequency electron tube
Assignee: RCA Corp
•
Filing: 1950-12-05
•
Granted: 1955-05-10
•
Expires: 1970-12-05
Abstract
No abstract record available.
Inventors
- 👤 Pryslak Nicholas Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:40
CPC Classifications
H; H01; H01J; H01J21/00; H01J21/02; H01J21/06; H01J21/065; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49879; Y10T29/49885; Y10T29/49945
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2324089A
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US2397308A
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US2363980A
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US2402119A
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US2500355A
Cited
US2456714A
Cited
US2461303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |