US2654048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuits embodying cathode potential stabilized electron discharge devices
Assignee: EMI Ltd
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Filing: 1950-05-23
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Granted: 1953-09-29
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Expires: 1970-05-23
Abstract
No abstract record available.
Inventors
- 👤 Mcgee James Dwyer
- 👤 White Eric Lawrence Casling
- 👤 Lubszynski Hans Gerhard
- 👤 Webley Reginald Sidney
- 👤 Huntley Keith Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:58
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/40; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/34; H04N5/00; H04N5/14; H04N5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |