US2485594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waveform compensating circuit for television film transmitters
Assignee: Farnsworth Research Corp
•
Filing: 1946-04-15
•
Granted: 1949-10-25
•
Expires: 1966-04-15
Abstract
No abstract record available.
Inventors
- 👤 Clyde E Hallmark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:31
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/36; H04N3/38
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |