Patent US2882441A successfully refreshed from Google Patents.
US2882441A
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Travelling wave amplifier tubes
Assignee: Teledyne UK Ltd
•
Filing: 1956-10-11
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Granted: 1959-04-14
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Expires: 1976-10-11
Abstract
No abstract record available.
Inventors
- 👤 Coulson Robert Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:29
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/30; G; G11; G11B; G11B17/00; G11B17/08; G11B17/12; G11B17/16; G21; G21C; G21C11/00; G21C11/02; G21C11/028; G21C5/00; G21C5/12; G21C5/126; G21F; G21F1/00; G21F1/02; G21F1/06; G21F1/10; G21F1/103; H01H; H01H50/00; H01H50/54; H01H50/56; H01H50/58; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2575383A
Cited
US2584597A
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US2757310A
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US2771565A
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US2752430A
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US2788464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |