Patent US2797862A successfully refreshed from Google Patents.
US2797862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital computer
Assignee: AT&T Inc
•
Filing: 1951-11-08
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Granted: 1957-07-02
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Expires: 1971-11-08
Abstract
No abstract record available.
Inventors
- 👤 Ernest G Andrews
- 👤 Cesareo Orfeo
- 👤 Paul B Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:30
CPC Classifications
G; G06; G06F; G06F15/00; G06F15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2616624A
Cited
US2625328A
Cited
US2502360A
Cited
US2580768A
Cited
US2538636A
Cited
US2604262A
Cited
US2651458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |