US2680825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traveling-wave amplifying tube
Assignee: Thales SA
•
Filing: 1950-03-02
•
Granted: 1954-06-08
•
Expires: 1970-03-02
Abstract
No abstract record available.
Inventors
- 👤 Warnecke Robert
- 👤 Charles Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:07
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/42; H01J25/44
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2300052A
Cited
US2372328A
Cited
US2473547A
Cited
US2511407A
Cited
US2566087A
Cited
US2531972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |