US2976487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized timing circuit
Assignee: AT&T Inc
•
Filing: 1958-08-07
•
Granted: 1961-03-21
•
Expires: 1978-08-07
Abstract
No abstract record available.
Inventors
- 👤 Cohen Ezra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:38
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2012837A
Cited
GB508449A
Cited
US2415457A
Cited
US2683806A
Cited
US2824287A
Cited
US2817772A
Cited
US2845548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |