US2859288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amplifier gain control circuit
Assignee: General Dynamics Corp
•
Filing: 1955-12-07
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Granted: 1958-11-04
•
Expires: 1975-12-07
Abstract
No abstract record available.
Inventors
- 👤 David L Tobias
- 👤 Arthur H Zefting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:11
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2227056A
Cited
US2383420A
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US2452880A
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US2610260A
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US2538028A
Cited
US2507695A
Cited
US2744169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |