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US3496555A
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Magnetic memory apparatus
Assignee: Unisys Corp
•
Filing: 1965-08-27
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Granted: 1970-02-17
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Expires: 1985-08-27
Abstract
No abstract record available.
Inventors
- 👤 Richard H Jones
- 👤 Eric E Bittmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:59
CPC Classifications
G; G11; G11C; G11C5/00; G11C5/02; H; H04; H04B; H04B3/00; H04B3/02; H04B3/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3257649A
Cited
US3362065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |