Patent US3146426A successfully refreshed from Google Patents.
US3146426A
Expired / Lapsed
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Memory system
Assignee: International Business Machines Corp
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Filing: 1959-06-30
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Granted: 1964-08-25
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Expires: 1979-06-30
Abstract
No abstract record available.
Inventors
- 👤 Agon Michel
- 👤 Jeanniot Jacques
- 👤 Poupon Yves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:35
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/383
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN AN INFORMATION MEMORY, THE COMBINATION COMPRISING A PLURALITY OF BISTABLE MAGNETIC ELEMENTS, A PLURALITY OF WINDING MEANS COUPLING EACH OF SAID ELEMENTS INCLUDING SENSE WINDING MEANS, SAID ELEMENTS ADAPTED TO BE SWITCHED FROM AN INFORMATION REPRESENTATIVE STABLE STATE TO A DATUM STABLE STATE WHEN THE WINDING MEANS OF SAID ELEMENTS ARE ENERGIZED WITH A FULL READ SELECT CURRENT AND FURTHER ADAPTED TO BE SWITCHED TO THE INFORMATION REPRESENTATIVE STATE WHEN THE WINDING MEANS OF SAID ELEMENTS ARE ENERGIZED WITH A FULL WRITE SELECT CURRENT, A PLURALITY OF FIRST SELECTION MEANS CONNECTED TO A NUMBER OF THE PLURALITY OF WINDING MEANS OF SAID ELEMENTS, EACH OF SAID FIRST SELECTION MEANS BEING ADAPTED TO PROVIDE A HALF READ SELECT CURRENT DURING A FIRST INTERVAL OF TIME AND A HALF WRITE SELECT CURRENT DURING A SECOND INTERVAL OF TIME TO THE NUMBER OF WINDING MEANS OF THE ELEMENTS CONNECTED WHEN ENERGIZED, A PLURALITY OF SECOND SELECTION MEANS CONNECTING OTHER WINDINGS OF THE PLURALITY OF WINDING MEANS ON SAID ELEMENTS, EACH OF SAID SECOND SELECTION
Claim 2
Dependent Claim
172 words
IN AN INFORMATION MEMORY, THE COMBINATION COMPRISING A PLURALITY OF BISTABLE MAGNETIC ELEMENTS, A PLURALITY OF WINDING MEANS COUPLING EACH OF SAID ELEMENTS INCLUDING SENSE WINDING MEANS, SAID ELEMENTS ADAPTED TO BE SWITCHED FROM AN INFORMATION REPRESENTATIVE STABLE STATE TO A DATUM STABLE STATE WHEN THE WINDING MEANS OF SAID ELEMENTS ARE ENERGIZED WITH A FULL READ SELECT CURRENT AND FURTHER ADAPTED TO BE SWITCHED TO THE INFORMATION REPRESENTATIVE STATE WHEN THE WINDING MEANS OF SAID ELEMENTS ARE ENERGIZED WITH A FULL WRITE SELECT CURRENT, A PLURALITY OF FIRST SELECTION MEANS CONNECTED TO A NUMBER OF THE PLURALITY OF WINDING MEANS OF SAID ELEMENTS, EACH OF SAID FIRST SELECTION MEANS BEING ADAPTED TO PROVIDE A HALF READ SELECT CURRENT DURING A FIRST INTERVAL OF TIME AND A HALF WRITE SELECT CURRENT DURING A SECOND INTERVAL OF TIME TO THE NUMBER OF WINDING MEANS OF THE ELEMENTS CONNECTED WHEN ENERGIZED, A PLURALITY OF SECOND SELECTION MEANS CONNECTING OTHER WINDINGS OF THE PLURALITY OF WINDING MEANS ON SAID ELEMENTS, EACH OF SAID SECOND SELECTION
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |