US3499981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Afc system for television receiver
Assignee: GTE Sylvania Inc
•
Filing: 1968-04-18
•
Granted: 1970-03-10
•
Expires: 1988-04-18
Abstract
No abstract record available.
Inventors
- 👤 Charles Bailey Neal
- 👤 Dong W Rhee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:22
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/02; H03J7/04; H03J7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2891105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |