Patent US3080549A successfully refreshed from Google Patents.
US3080549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic cores
Assignee: Unisys Corp
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Filing: 1957-03-25
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Granted: 1963-03-05
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Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Sidney M Rubens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:28
CPC Classifications
H; H01; H01F; H01F3/00; H01F3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A MAGNETIC MEMORY CORE CIRCUIT COMPRISING FIRST AND SECOND JUXTAPOSED PIECES OF MAGNETIC MATERIAL BOTH HAVING RECTANGULAR HYSTERESIS LOOP CHARACTERISTICS AND REMANENCE IN THE SAME DIRECTION, AT LEAST ONE WINDING DISPOSED ABOUT BOTH PIECES, AND MEANS FOR EFFECTING IN SAID WINDING A SIGNAL INDICATIVE OF THE DIRECTION OF REMANENCE IN THE MAGNETIC MATERIAL INCLUDING MEANS FOR PASSING EQUAL
Claim 2
Dependent Claim
58 words
A MAGNETIC MEMORY CORE CIRCUIT COMPRISING FIRST AND SECOND JUXTAPOSED PIECES OF MAGNETIC MATERIAL BOTH HAVING RECTANGULAR HYSTERESIS LOOP CHARACTERISTICS AND REMANENCE IN THE SAME DIRECTION, AT LEAST ONE WINDING DISPOSED ABOUT BOTH PIECES, AND MEANS FOR EFFECTING IN SAID WINDING A SIGNAL INDICATIVE OF THE DIRECTION OF REMANENCE IN THE MAGNETIC MATERIAL INCLUDING MEANS FOR PASSING EQUAL
References Cited (Backward Citations)
US2278744A
Cited
US2743507A
Cited
FR1105870A
Cited
US2723353A
Cited
US2982947A
Cited
US2814794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |