Patent US3130388A successfully refreshed from Google Patents.
US3130388A
Expired / Lapsed
US
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Non-destructive sensing memory
Assignee: Unisys Corp
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Filing: 1960-05-02
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Granted: 1964-04-21
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Expires: 1980-05-02
Abstract
No abstract record available.
Inventors
- 👤 Andre M Renard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:01
CPC Classifications
G; G11; G11C; G11C17/00; G11C17/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
147 words
A MEMORY DEVICE WITH NON-DESTRUCTIVE SENSING PROVISIONS COMPRISING A NON-MAGNETIC, NON-METALLIC CARD OR PLATE DIVIDED INTO A PLURALITY OF AREAS AT LEAST ONE OF WHICH HAS A NON-MAGNETIC METALLIC RING FOR REPRESENTING THE STORAGE OF A BINARY DIGIT OF ONE SENSE, AT LEAST ANOTHER OF SAID AREAS REPRESENTING A BINARY DIGIT OF OPPOSITE SENSE BY THE ABSENCE OF SUCH RING, A PLURALITY OF OUTPUT LINES INCLUDING FIRST AND SECOND ONES RESPECTIVELY POSITIONED ADJACENT THE SAID ONE AND ANOTHER AREAS, AND AT LEAST ONE DRIVE LINE INSULATIVELY CROSSING AND BEING MAGNETICALLY COUPLED TO SAID OUTPUT LINES IN THE REGION OF THE SAID ONE AND ANOTHER AREAS ON THE SIDE OF SAID OUTPUT LINES OPPOSITE SAID AREAS AND RING, THE DRIVE LINE BEING POSITIONED AT LEAST MAINLY ADJACENT ONE EDGE OF SAID RING WITH THE SAID FIRST OUTPUT LINE BEING SUBSTANTIALLY CENTERED ON SAID RING AS IT CROSSES SAME.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |