US3131382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic memory device
Assignee: Unisys Corp
•
Filing: 1962-06-15
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Granted: 1964-04-28
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Expires: 1982-06-15
Abstract
No abstract record available.
Inventors
- 👤 George W Valenta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:30
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A MAGNETIC MEMORY DEVICE COMPRISING, A LAYER OF ELECTRICALLY CONDUCTIVE MATERIAL, A FIRST GROUP OF MAGNETIC MEMORY ELEMENTS ADJACENT TO A SURFACE OF SAID LAYER OF MATERIAL, A SECOND GROUP OF MAGNETIC MEMORY ELEMENTS ADJACENT TO THE OPPOSITE SURFACE OF SAID LAYER OF MATERIAL, AND A SOLENOID ENCIRCLING THE LAYER OF MATERIAL AND BOTH GROUPS OF MAGNETIC MEMORY ELEMENTS.
Claim 2
Dependent Claim
59 words
A MAGNETIC MEMORY DEVICE COMPRISING, A LAYER OF ELECTRICALLY CONDUCTIVE MATERIAL, A FIRST GROUP OF MAGNETIC MEMORY ELEMENTS ADJACENT TO A SURFACE OF SAID LAYER OF MATERIAL, A SECOND GROUP OF MAGNETIC MEMORY ELEMENTS ADJACENT TO THE OPPOSITE SURFACE OF SAID LAYER OF MATERIAL, AND A SOLENOID ENCIRCLING THE LAYER OF MATERIAL AND BOTH GROUPS OF MAGNETIC MEMORY ELEMENTS.
References Cited (Backward Citations)
US3083354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |