Patent US3114898A successfully refreshed from Google Patents.
US3114898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic interdomain wall shift register
Assignee: Laboratory For Electronics Inc
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Filing: 1961-12-11
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Granted: 1963-12-17
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Expires: 1981-12-11
Abstract
No abstract record available.
Inventors
- 👤 Harrison W Fuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:24
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/0808; G11C19/0833
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
234 words
A MAGNETIC SHIFT REGISTER COMPRISING A MAGNETIC STORAGE MEDIUM; WRITING MEANS AT THE INPUT END OF SAID MAGNETIC SHIFT REGISTER FOR ESTABLISHING INTERDOMAIN WALLS IN SAID MAGNETIC STORAGE MEDIUM IN ACCORDANCE WITH INPUT DATA, EACH OF SAID INTERDOMAIN WALLS HAVING AN EXTERNAL MAGNETIC FIELD ASSOCIATED THEREWITH; DRIVING MEANS FOR PROPAGATING EACH OF SAID INTERDOMAIN WALLS ALONG THE LENGTH OF SAID MAGNETIC STORAGE MEDIUM; ONE OR MORE MAGNETIC CONTROL MEDIA IN CLOSE PROXIMITY WITH SAID MAGNETIC STORAGE MEDIUM, SAID MAGNETIC CONTROL MEDIA HAVING REGIONS THEREIN ADAPTED TO OBSTRUCT THE MOTION OF EACH OF SAID INTERDOMAIN WALLS PROPAGATED ALONG THE LENGTH OF SAID MAGNETIC STORAGE MEDIUM AND EACH OF SAID REGIONS HAVING AN EXTERNAL MAGNETIC FIELD ASSOCIATED THEREWITH; CONTROL MEANS FOR REGULATING THE MAGNITUDE OF THE MAGNETOSTATIC INTERACTION FORCES EXISTING BETWEEN EACH OF SAID INTERDOMAIN WALLS IN SAID MAGNETIC STORAGE MEDIUM AND EACH OF SAID REGIONS IN SAID MAGNETIC CONTROL MEDIA WHEREBY EACH OF SAID INTERDOMAIN WALLS IS SHIFTED IN A PRESELECTED MANNER ALONG THE LENGTH OF SAID MAGNETIC STORAGE MEDIUM, SAID MAGNETOSTATIC INTERACTION FORCE ARISING OUT OF THE INTERACTION OF THE EXTERNAL MAGNETIC FIELD OF EACH OF SAID INTERDOMAIN WALLS WITH THE EXTERNAL MAGNETIC FIELD OF EACH OF SAID REGIONS; AND READING MEANS AT THE OUTPUT END OF SAID MAGNETIC SHIFT REGISTER TO DETECT THE PRESENCE OF SAID INTERDOMAIN WALLS IN SAID MAGNETIC STORAGE MEDIUM AND TO GENERATE AN OUTPUT SIGNAL REPRESENTATIVE OF THE DATA.
Claim 2
Dependent Claim
234 words
A MAGNETIC SHIFT REGISTER COMPRISING A MAGNETIC STORAGE MEDIUM; WRITING MEANS AT THE INPUT END OF SAID MAGNETIC SHIFT REGISTER FOR ESTABLISHING INTERDOMAIN WALLS IN SAID MAGNETIC STORAGE MEDIUM IN ACCORDANCE WITH INPUT DATA, EACH OF SAID INTERDOMAIN WALLS HAVING AN EXTERNAL MAGNETIC FIELD ASSOCIATED THEREWITH; DRIVING MEANS FOR PROPAGATING EACH OF SAID INTERDOMAIN WALLS ALONG THE LENGTH OF SAID MAGNETIC STORAGE MEDIUM; ONE OR MORE MAGNETIC CONTROL MEDIA IN CLOSE PROXIMITY WITH SAID MAGNETIC STORAGE MEDIUM, SAID MAGNETIC CONTROL MEDIA HAVING REGIONS THEREIN ADAPTED TO OBSTRUCT THE MOTION OF EACH OF SAID INTERDOMAIN WALLS PROPAGATED ALONG THE LENGTH OF SAID MAGNETIC STORAGE MEDIUM AND EACH OF SAID REGIONS HAVING AN EXTERNAL MAGNETIC FIELD ASSOCIATED THEREWITH; CONTROL MEANS FOR REGULATING THE MAGNITUDE OF THE MAGNETOSTATIC INTERACTION FORCES EXISTING BETWEEN EACH OF SAID INTERDOMAIN WALLS IN SAID MAGNETIC STORAGE MEDIUM AND EACH OF SAID REGIONS IN SAID MAGNETIC CONTROL MEDIA WHEREBY EACH OF SAID INTERDOMAIN WALLS IS SHIFTED IN A PRESELECTED MANNER ALONG THE LENGTH OF SAID MAGNETIC STORAGE MEDIUM, SAID MAGNETOSTATIC INTERACTION FORCE ARISING OUT OF THE INTERACTION OF THE EXTERNAL MAGNETIC FIELD OF EACH OF SAID INTERDOMAIN WALLS WITH THE EXTERNAL MAGNETIC FIELD OF EACH OF SAID REGIONS; AND READING MEANS AT THE OUTPUT END OF SAID MAGNETIC SHIFT REGISTER TO DETECT THE PRESENCE OF SAID INTERDOMAIN WALLS IN SAID MAGNETIC STORAGE MEDIUM AND TO GENERATE AN OUTPUT SIGNAL REPRESENTATIVE OF THE DATA.
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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |