Patent US4149071A successfully refreshed from Google Patents.
Patent US3209333A successfully refreshed from Google Patents.
US3209333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced magnetic memory drive and sense conductors for cancelling unwanted field effects
Assignee: International Business Machines Corp
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Filing: 1960-04-15
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Granted: 1965-09-28
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Expires: 1980-04-15
Abstract
No abstract record available.
Inventors
- 👤 Louis A Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:31
CPC Classifications
G; G11; G11C; G11C7/00; G11C7/02; G11C11/00; G11C11/02; G11C11/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A MEMORY MATRIX COMPRISING, A PLURALITY OF MAGNETIC MEANS MADE OF MATERIAL EXHIBITING AN EASY AXIS OF MAGNETIZATION DEFINING DIFFERENT STABLE STATES OF FLUX ORIENTATION, EACH SAID ELEMENTS DEFINING A PORTION OF A CLOSED FLUX PATH, SAID ELEMENTS BEING ARRANGED IN COLUMNS AND ROWS, A PLUARALITY OF PAIRS OF ROW CONDUCTORS AND A PLURALITY OF ROW SENSE CONDUCTORS, EACH RESPECTIVE PAIR OF ROW CONDUCTORS AND A RESPECTIVE ONE OF SAID ROW SENSE CONDUCTORS COUPLING ALL THE ELEMENTS IN A DIFFERENT ROW AND EACH ONE OF SAID RESPECTIVE SENSE CONDUCTORS BEING LOCATED INTERMEDIATE AND EQUIDISTANT FROM SAID RESPECTIVE PAIR OF ROW CONDUCTORS, A PLURALITY OF COLUMN CONDUCTORS, EACH COLUMN CONDUCTOR COUPLING ALL THE ELEMENTS OF A DIFFERENT COLUMN, SAID COLUMN CONDUCTORS POSITIONED SYMMETRICALLY ABOUT SAID SENSE CONDUCTORS AND EQUIDISTANT FROM THE NEAREST INTERMEDIATE SENSE CONDUCTOR, AND MEANS FOR SELECTIVELY ENERGIZING A COLUMN CONDUCTOR AND A PAIR OF ROW CONDUCTORS TO SWITCH A DESIRED ELEMENT COUPLED THEREBY FROM ONE STABLE STATE TO ANOTHER INCLUDING MEANS FOR ENERGIZING SAID SELECTED PAIR OF ROW CONDUCTORS WITH A BALANCED CURRENT IMPULSE WHEREBY AN OUTPUT SIGNAL IS INDUCED ON ONE OF SAID ROW SENSE CONDUCTORS SUBSTANTIALLY FREE OF UNWANTED ELECTRICAL AND MAGNETIC FIELD COUPLING.
Claim 2
Dependent Claim
198 words
A MEMORY MATRIX COMPRISING, A PLURALITY OF MAGNETIC MEANS MADE OF MATERIAL EXHIBITING AN EASY AXIS OF MAGNETIZATION DEFINING DIFFERENT STABLE STATES OF FLUX ORIENTATION, EACH SAID ELEMENTS DEFINING A PORTION OF A CLOSED FLUX PATH, SAID ELEMENTS BEING ARRANGED IN COLUMNS AND ROWS, A PLUARALITY OF PAIRS OF ROW CONDUCTORS AND A PLURALITY OF ROW SENSE CONDUCTORS, EACH RESPECTIVE PAIR OF ROW CONDUCTORS AND A RESPECTIVE ONE OF SAID ROW SENSE CONDUCTORS COUPLING ALL THE ELEMENTS IN A DIFFERENT ROW AND EACH ONE OF SAID RESPECTIVE SENSE CONDUCTORS BEING LOCATED INTERMEDIATE AND EQUIDISTANT FROM SAID RESPECTIVE PAIR OF ROW CONDUCTORS, A PLURALITY OF COLUMN CONDUCTORS, EACH COLUMN CONDUCTOR COUPLING ALL THE ELEMENTS OF A DIFFERENT COLUMN, SAID COLUMN CONDUCTORS POSITIONED SYMMETRICALLY ABOUT SAID SENSE CONDUCTORS AND EQUIDISTANT FROM THE NEAREST INTERMEDIATE SENSE CONDUCTOR, AND MEANS FOR SELECTIVELY ENERGIZING A COLUMN CONDUCTOR AND A PAIR OF ROW CONDUCTORS TO SWITCH A DESIRED ELEMENT COUPLED THEREBY FROM ONE STABLE STATE TO ANOTHER INCLUDING MEANS FOR ENERGIZING SAID SELECTED PAIR OF ROW CONDUCTORS WITH A BALANCED CURRENT IMPULSE WHEREBY AN OUTPUT SIGNAL IS INDUCED ON ONE OF SAID ROW SENSE CONDUCTORS SUBSTANTIALLY FREE OF UNWANTED ELECTRICAL AND MAGNETIC FIELD COUPLING.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |