US2812133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic computing device
Assignee: AT&T Inc
•
Filing: 1952-06-19
•
Granted: 1957-11-05
•
Expires: 1972-06-19
Abstract
No abstract record available.
Inventors
- 👤 Mcmillan Brockway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:38
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/388
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2498081A
Cited
US2522291A
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US2463535A
Cited
US2473691A
Cited
US2496633A
Cited
US2576040A
Cited
US2599949A
Cited
US2692727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-04 | 1961-05-06 | 1961-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-04 | 1965-05-06 | 1965-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-04 | 1969-05-06 | 1969-11-05 | $7700.00 | Window Closed / Lapsed |