Patent US2954433A successfully refreshed from Google Patents.
US2954433A
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US
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Multiple error correction circuitry
Assignee: AT&T Inc
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Filing: 1957-10-30
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Granted: 1960-09-27
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Expires: 1977-10-30
Abstract
No abstract record available.
Inventors
- 👤 Willard D Lewis
- 👤 Alan C Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:55
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/004; H04L1/0056; H04L1/0057; H03; H03M; H03M13/00; H03M13/03; H03M13/05; H03M13/13; H03M13/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2552629A
Cited
US2653996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |