US2768293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency-modulated oscillator with automatic frequency correction
Assignee: Hartford National Bank and Trust Co
•
Filing: 1951-03-23
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Granted: 1956-10-23
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Expires: 1971-03-23
Abstract
No abstract record available.
Inventors
- 👤 Johannes Marinus Van Hofweegen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:29
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/02; H03C3/09; H03J; H03J7/00; H03J7/02; H03J7/04; H03J7/14
Claims Analysis
Total Claims: 0
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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) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |