US2926334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Error detection circuit
Assignee: AT&T Inc
•
Filing: 1955-04-20
•
Granted: 1960-02-23
•
Expires: 1975-04-20
Abstract
No abstract record available.
Inventors
- 👤 Jr George F Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:51
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/08; G06F11/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2276293A
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US2244700A
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US2446643A
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US2473444A
Cited
US2484226A
Cited
US2680781A
Cited
US2734187A
Cited
US2724739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |