Patent US2828419A successfully refreshed from Google Patents.
US2828419A
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Automatic frequency control system
Assignee: General Electric Co
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Filing: 1954-10-11
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Granted: 1958-03-25
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Expires: 1974-10-11
Abstract
No abstract record available.
Inventors
- 👤 Wolf J Gruen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:06
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/08; H03L7/10; H03L7/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2280563A
Cited
US2332540A
Cited
US2301620A
Cited
US2676262A
Cited
US2704324A
Cited
US2764686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |