US3305845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic memory core and method
Assignee: Unisys Corp
•
Filing: 1963-02-01
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Granted: 1967-02-21
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Expires: 1983-02-01
Abstract
No abstract record available.
Inventors
- 👤 Kenneth T Grace
- 👤 Robert J Teply
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:48
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/1862; D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/0015; B01J2219/00155; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A MEMORY ELEMENT COMPRISING: A NONMAGNETIZABLE BASE MEMBER HAVING AT LEAST FIRST AND SECOND SPACED-APART APERTURES THERETHROUGH FORMING A WEB THEREBETWEEN, A MAGNETIZABLE MATERIAL AFFIXED TO THE WALLS OF SAID APERTURES AND TO SAID WEB FORMING FLUX PATHS AROUND SAID APERTURE WALLS AND SAID WEB, A PRINTED CIRCUIT CONDUCTOR DISPOSED UPON SAID WEB THREADING SAID WEB FORMED FLUX PATH, AND INSULATING MATERIAL ELECTRICALLY INSULATING SAID PRINTED CIRCUIT CONDUCTOR FROM SAID WEB FORMED FLUX PATH.
Claim 2
Dependent Claim
74 words
A MEMORY ELEMENT COMPRISING: A NONMAGNETIZABLE BASE MEMBER HAVING AT LEAST FIRST AND SECOND SPACED-APART APERTURES THERETHROUGH FORMING A WEB THEREBETWEEN, A MAGNETIZABLE MATERIAL AFFIXED TO THE WALLS OF SAID APERTURES AND TO SAID WEB FORMING FLUX PATHS AROUND SAID APERTURE WALLS AND SAID WEB, A PRINTED CIRCUIT CONDUCTOR DISPOSED UPON SAID WEB THREADING SAID WEB FORMED FLUX PATH, AND INSULATING MATERIAL ELECTRICALLY INSULATING SAID PRINTED CIRCUIT CONDUCTOR FROM SAID WEB FORMED FLUX PATH.
References Cited (Backward Citations)
US2985948A
Cited
US2981932A
Cited
US2961745A
Cited
US2878463A
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US2882519A
Cited
US3130134A
Cited
US2988688A
Cited
US3138785A
Cited
US3154840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |