Patent US2861212A successfully refreshed from Google Patents.
US2861212A
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US
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Travelling wave magnetron tube
Assignee: CIE GENERALE DE ELEGRAPHIE SAN
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Filing: 1952-07-11
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Granted: 1958-11-18
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Expires: 1972-07-11
Abstract
No abstract record available.
Inventors
- 👤 Lerbs Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:15
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/42; H01J23/00; H01J23/16; H01J23/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2414121A
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US2602148A
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US2511407A
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US2687777A
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US2531972A
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US2694783A
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US2620458A
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US2622158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |