US2690913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic memory device
Assignee: Individual
•
Filing: 1951-03-14
•
Granted: 1954-10-05
•
Expires: 1971-03-14
Abstract
No abstract record available.
Inventors
- 👤 Rabinow Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:57
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/012; G11B17/00; G11B17/22; G11B17/24; G11B27/00; G11B27/002; G11B5/48; G11B5/54; G11B5/55; G11B5/5521
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US702985A
Cited
US1454134A
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DE598584C
Cited
US2175142A
Cited
US2235301A
Cited
US2362918A
Cited
US2457668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |