US2916655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traveling wave tubes
Assignee: Raytheon Co
•
Filing: 1957-05-31
•
Granted: 1959-12-08
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Expires: 1977-05-31
Abstract
No abstract record available.
Inventors
- 👤 Harper Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:44
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)
US1592934A
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US2435262A
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GB614421A
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US2542797A
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US2603773A
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US2784345A
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US2828443A
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US2809328A
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US2704350A
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US2837684A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |