Patent US2965711A successfully refreshed from Google Patents.
US2965711A
Expired / Lapsed
US
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Apparatus for correcting for transmission variations in television and other signal transmission systems
Assignee: EMI Ltd
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Filing: 1956-11-20
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Granted: 1960-12-20
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Expires: 1976-11-20
Abstract
No abstract record available.
Inventors
- 👤 James Ivanhoe John Penfound
- 👤 Lodge James Alec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:15
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/93; H04N5/931; H04N23/00; H04N23/80; H04N23/81; H04N25/00; H04N25/10
Claims Analysis
Total Claims: 0
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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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |