US3214742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic inductive memory with electrodes on conductive sheets
Assignee: AT&T Inc
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Filing: 1960-12-23
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Granted: 1965-10-26
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Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Andrew H Bobeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:32
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/54; G06; G06N; G06N20/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
A MEMORY CIRCUIT COMPRISING A PLURALITY OF INFORMATION STORAGE PLATES EACH OF AN ELECTRICITY CONDUCTIVE MAGNETIC MATERIAL HAVING SUBSTANTIALLY RECTANGULAR HYSTERESIS CHARACTERISTICS, A PLURALITY OF ENERGIZING ELECTRODES IN ELECTRICAL CONTACT WITH ONE SIDE OF EACH OF SAID STORAGE PLATES, SAID ELECTRODES BEING ARRANGED IN A PLURALITY OF GROUPS, EACH OF SAID GROUPS INCLUDING CORRESPONDING ELECTRODES OF SAID PLURALITY OF STORAGE PLATES, A GROUND PLATE IN ELECTRICAL CONTACT WITH THE ENTIRE OTHER SIDE OF EACH OF SAID STORAGE PLATES, A PLURALITY OF WRITE CIRCUITS FOR SAID ELECTRODE GROUPS, RESPECTIVELY, FOR INDUCING REMANENT FLUXES IN DISCRETE PORTIONS OF SAID STORAGE PLATES BETWEEN SAID ENERGIZING ELECTRODES AND SAID GROUND PLATES, EACH OF SAID WRITE CIRCUITS COMPRISING A WRITE PULSE SOURCE FOR PROVIDING A WRITE PULSE OF SUFFICIENT MAGNITUDE TO CAUSE COMPLETE FLUX SWITCHINGS IN SAID DISCRETE PORTIONS, A PLURALITY OF FIRST BRANCH CIRCUITS, EACH OF SAID FIRST BRANCH CIRCUITS INCLUDING ONE OF SAID ENERGIZING ELECTRODES, A DISCRETE PORTION OF A STORAGE PLATE, A GROUND PLATE, AND A TRANSISTOR GATING MEANS, AND A UNIDIRECTIONAL CURRENT ELEMENT CONNECTED BETWEEN SAID WRITE PULSE SOURCE AND EACH OF SAID BRANCH CIRCUITS; AND MEANS FOR SELECTIVELY ENABLING SAID TRANSISTOR GATING MEANS.
Claim 2
Dependent Claim
193 words
A MEMORY CIRCUIT COMPRISING A PLURALITY OF INFORMATION STORAGE PLATES EACH OF AN ELECTRICITY CONDUCTIVE MAGNETIC MATERIAL HAVING SUBSTANTIALLY RECTANGULAR HYSTERESIS CHARACTERISTICS, A PLURALITY OF ENERGIZING ELECTRODES IN ELECTRICAL CONTACT WITH ONE SIDE OF EACH OF SAID STORAGE PLATES, SAID ELECTRODES BEING ARRANGED IN A PLURALITY OF GROUPS, EACH OF SAID GROUPS INCLUDING CORRESPONDING ELECTRODES OF SAID PLURALITY OF STORAGE PLATES, A GROUND PLATE IN ELECTRICAL CONTACT WITH THE ENTIRE OTHER SIDE OF EACH OF SAID STORAGE PLATES, A PLURALITY OF WRITE CIRCUITS FOR SAID ELECTRODE GROUPS, RESPECTIVELY, FOR INDUCING REMANENT FLUXES IN DISCRETE PORTIONS OF SAID STORAGE PLATES BETWEEN SAID ENERGIZING ELECTRODES AND SAID GROUND PLATES, EACH OF SAID WRITE CIRCUITS COMPRISING A WRITE PULSE SOURCE FOR PROVIDING A WRITE PULSE OF SUFFICIENT MAGNITUDE TO CAUSE COMPLETE FLUX SWITCHINGS IN SAID DISCRETE PORTIONS, A PLURALITY OF FIRST BRANCH CIRCUITS, EACH OF SAID FIRST BRANCH CIRCUITS INCLUDING ONE OF SAID ENERGIZING ELECTRODES, A DISCRETE PORTION OF A STORAGE PLATE, A GROUND PLATE, AND A TRANSISTOR GATING MEANS, AND A UNIDIRECTIONAL CURRENT ELEMENT CONNECTED BETWEEN SAID WRITE PULSE SOURCE AND EACH OF SAID BRANCH CIRCUITS; AND MEANS FOR SELECTIVELY ENABLING SAID TRANSISTOR GATING MEANS.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |