US2689887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic gain control for a traveling wave tube circuit
Assignee: Thales SA
•
Filing: 1949-05-18
•
Granted: 1954-09-21
•
Expires: 1969-05-18
Abstract
No abstract record available.
Inventors
- 👤 Doehler Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:43
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2139438A
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US2107410A
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US2300052A
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US2602148A
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US2578434A
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US2541843A
Cited
US2623193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |