US2970240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-cooled traveling wave tube
Assignee: Raytheon Co
•
Filing: 1958-10-01
•
Granted: 1961-01-31
•
Expires: 1978-10-01
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Iversen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:02
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/36; H01J25/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2758242A
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US2838711A
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US2808534A
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US2812470A
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US2788464A
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US2882440A
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US2822501A
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US2884556A
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US2850666A
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US2847608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |