US2481902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic frequency control circuit for frequency modulation television systems
Assignee: Lanteris Space LLC
•
Filing: 1946-04-10
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Granted: 1949-09-13
•
Expires: 1966-04-10
Abstract
No abstract record available.
Inventors
- 👤 William E Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:13
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/02; H03C3/09; H03J; H03J7/00; H03J7/02; H03J7/04; H04; H04B; H04B14/00; H04B14/002; H04B14/006; H04N; H04N7/00; H04N7/04; H04N7/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2193843A
Cited
US2144235A
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US2184072A
Cited
US2296919A
Cited
US2290517A
Cited
US2341649A
Cited
US2354827A
Cited
US2413913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |