Patent US3403226A successfully refreshed from Google Patents.
US3403226A
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Reduced bandwidth dual mode encoding of video signals
Assignee: AT&T Inc
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Filing: 1965-09-30
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Granted: 1968-09-24
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Expires: 1985-09-30
Abstract
No abstract record available.
Inventors
- 👤 William T Wintringham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:55
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/02; H04B14/04; H04B14/046; H03; H03M; H03M7/00; H03M7/30; H03M7/3053; H04N; H04N19/00; H04N19/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3090008A
Cited
US3071727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |