US3271741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic memory system
Assignee: Unisys Corp
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Filing: 1962-09-28
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Granted: 1966-09-06
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Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Albert M Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:48
CPC Classifications
G; G11; G11C; G11C8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A MEMORY SYSTEM COMPRISING, IN COMBINATION, A MEMORY ARRAY HAVING ROWS AND COLUMNS OF BISTABLE STATE MAGNETIC ELEMENTS, SAID ARRAY HAVING AN EVEN AND AN ODD ADDRESS PORTION, INPUT MEANS PROVIDING DRIVE CURRENT TO A SELECTED EVEN OR ODD ADDRESS PORTION, SENSING MEANS FOR DETECTING "ONE" OR "ZERO" OUTPUT INFORMATION RESULTING FROM SAID DRIVE CURRENT, CIRCUIT MEANS RESPONSIVE TO SAID SENSING MEANS FOR DIRECTING SAID SENSED OUTPUT INFORMATION TO AN INFORMATION REGISTER, MEANS INCLUDING AN EVEN OR ODD INFORMATION GATE REGENERATING SAID SENSED OUTPUT INFORMATION BACK INTO SAID MEMORY ARRAY AT SAID SELECTED ADDRESS PORTION, THE OUTPUT OF SAID EVEN OR ODD INFORMATION GATE CAUSING AN INFORMATION DRIVER TO PROVIDE REWRITE CURRENT IN A FIRST OR A SECOND DIRECTION AT SAID SEC-
Claim 2
Dependent Claim
122 words
A MEMORY SYSTEM COMPRISING, IN COMBINATION, A MEMORY ARRAY HAVING ROWS AND COLUMNS OF BISTABLE STATE MAGNETIC ELEMENTS, SAID ARRAY HAVING AN EVEN AND AN ODD ADDRESS PORTION, INPUT MEANS PROVIDING DRIVE CURRENT TO A SELECTED EVEN OR ODD ADDRESS PORTION, SENSING MEANS FOR DETECTING "ONE" OR "ZERO" OUTPUT INFORMATION RESULTING FROM SAID DRIVE CURRENT, CIRCUIT MEANS RESPONSIVE TO SAID SENSING MEANS FOR DIRECTING SAID SENSED OUTPUT INFORMATION TO AN INFORMATION REGISTER, MEANS INCLUDING AN EVEN OR ODD INFORMATION GATE REGENERATING SAID SENSED OUTPUT INFORMATION BACK INTO SAID MEMORY ARRAY AT SAID SELECTED ADDRESS PORTION, THE OUTPUT OF SAID EVEN OR ODD INFORMATION GATE CAUSING AN INFORMATION DRIVER TO PROVIDE REWRITE CURRENT IN A FIRST OR A SECOND DIRECTION AT SAID SEC-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |