Patent US2957945A successfully refreshed from Google Patents.
US2957945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing circuit
Assignee: AT&T Inc
•
Filing: 1957-12-24
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Granted: 1960-10-25
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Expires: 1977-12-24
Abstract
No abstract record available.
Inventors
- 👤 George N Packard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:53
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/50; G06F7/505; G06F7/5055; H; H04; H04J; H04J3/00; H04J3/17; H04J3/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2518405A
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US2640872A
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US2541932A
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US2577141A
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US2779933A
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US2669706A
Cited
US2727094A
Cited
US2692303A
Cited
US2674733A
Cited
US2744955A
Cited
US2827623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |