US2627024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic frequency control
Assignee: Individual
•
Filing: 1944-04-21
•
Granted: 1953-01-27
•
Expires: 1964-04-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Persa R Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:07
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2261800A
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US2283523A
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US2334189A
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US2295629A
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US2304377A
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US2421020A
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US2462857A
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US2404568A
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US2434293A
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US2434294A
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US2424796A
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US2410075A
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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) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |