US3151316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic data storage system
Assignee: AT&T Inc
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Filing: 1959-10-30
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Granted: 1964-09-29
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Expires: 1979-10-30
Abstract
No abstract record available.
Inventors
- 👤 Andrew H Bobeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:50
CPC Classifications
G; G11; G11C; G11C8/00; G11C8/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A MAGNETIC DATA STORAGE SYSTEM THE COMBINATION COMPRISING A SURFACE OF MAGNETIZABLE MATERIAL WHEREIN BINARY INFORMATION IS STORED AS REMANENT MAGNETIC FLUX CONDITIONS IN AN INCREMENTAL AREA, A MEMBER SEPARATE FROM SAID SURFACE AND HAVING MECHANICAL WAVE PROPAGATING CHARACTERISTICS, AN ELECTRICAL CONDUCTOR ATTACHED TO SAID MEMBER SUCH THAT CHANGES IN THE DIMENSIONS OF SAID MEMBER WILL CAUSE DISPLACEMENT OF PORTIONS OF SAID CONDUCTOR, SAID MEMBER POSITIONED SUCH THAT SAID CONDUCTOR IS POSITIONED ADJACENT SAID AREA TO LINK THE MAGNETIC FLUX EMANATING THEREFROM, AND MEANS FOR PROPAGATING A MECHANICAL WAVE IN SAID MEMBER TO CAUSE CHANGES IN SAID DIMENSIONS OF SAID MEMBER, SAID CHANGES CAUSING DISPLACEMENT OF SAID CONDUCTOR PORTIONS TO CAUSE SAID CONDUCTOR PORTIONS TO CUT SAID FLUX AND THEREBY TO INDUCE A SIGNAL THEREIN.
Claim 2
Dependent Claim
126 words
IN A MAGNETIC DATA STORAGE SYSTEM THE COMBINATION COMPRISING A SURFACE OF MAGNETIZABLE MATERIAL WHEREIN BINARY INFORMATION IS STORED AS REMANENT MAGNETIC FLUX CONDITIONS IN AN INCREMENTAL AREA, A MEMBER SEPARATE FROM SAID SURFACE AND HAVING MECHANICAL WAVE PROPAGATING CHARACTERISTICS, AN ELECTRICAL CONDUCTOR ATTACHED TO SAID MEMBER SUCH THAT CHANGES IN THE DIMENSIONS OF SAID MEMBER WILL CAUSE DISPLACEMENT OF PORTIONS OF SAID CONDUCTOR, SAID MEMBER POSITIONED SUCH THAT SAID CONDUCTOR IS POSITIONED ADJACENT SAID AREA TO LINK THE MAGNETIC FLUX EMANATING THEREFROM, AND MEANS FOR PROPAGATING A MECHANICAL WAVE IN SAID MEMBER TO CAUSE CHANGES IN SAID DIMENSIONS OF SAID MEMBER, SAID CHANGES CAUSING DISPLACEMENT OF SAID CONDUCTOR PORTIONS TO CAUSE SAID CONDUCTOR PORTIONS TO CUT SAID FLUX AND THEREBY TO INDUCE A SIGNAL THEREIN.
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) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |