US2941113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traveling-wave tube
Assignee: Raytheon Co
•
Filing: 1957-04-01
•
Granted: 1960-06-14
•
Expires: 1977-04-01
Abstract
No abstract record available.
Inventors
- 👤 Horace R Johnson
- 👤 Rolf D Weglein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:09
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/36; H01J25/40; H01J25/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2610308A
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US2643353A
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US2761088A
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US2742588A
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US2730649A
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US2812467A
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US2843793A
Cited
US2843792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |