US2912677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical circuits employing sensing wires threading magnetic core memory elements
Assignee: AT&T Inc
•
Filing: 1953-12-31
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Granted: 1959-11-10
•
Expires: 1973-12-31
Abstract
No abstract record available.
Inventors
- 👤 Robert L Ashenhurst
- 👤 Robert C Minnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:56
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1739579A
Cited
US2254931A
Cited
US2519513A
Cited
US2691156A
Cited
US2724103A
Cited
US2719965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |