Patent US2802899A successfully refreshed from Google Patents.
US2802899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillator control system
Assignee: RCA Corp
•
Filing: 1952-04-18
•
Granted: 1957-08-13
•
Expires: 1972-04-18
Abstract
No abstract record available.
Inventors
- 👤 Richard W Sonnenfeldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:14
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/44; H04N9/455
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2475779A
Cited
US2641693A
Cited
US2473790A
Cited
US2609535A
Cited
US2640939A
Cited
US2594380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |