US2964735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic selector circuit
Assignee: AT&T Inc
•
Filing: 1957-08-14
•
Granted: 1960-12-13
•
Expires: 1977-08-14
Abstract
No abstract record available.
Inventors
- 👤 Jr George F Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:57
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2810098A
Cited
US2823856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |