US2882518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic storage circuit
Assignee: AT&T Inc
•
Filing: 1956-02-13
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Granted: 1959-04-14
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Expires: 1976-02-13
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Buhrendorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:25
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/02; B; B82; B82Y; B82Y10/00; G11B5/012; G11B5/09; G11B5/127; G11B5/33; G11B5/39; G11B5/3903; G11B5/3967; G11B2005/0002; G11B2005/0005; G11B2005/0008; G11B2005/0026; G11B2005/0029
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734186A
Cited
US2700148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |