US3360787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single sheet magnetic memory device
Assignee: AT&T Inc
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Filing: 1964-05-07
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Granted: 1967-12-26
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Expires: 1984-05-07
Abstract
No abstract record available.
Inventors
- 👤 James T H Chang
- 👤 Umberto F Gianola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:35
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06085
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
143 words
A MAGNETIC MEMORY INCLUDING A MEMORY PLANE, SAID MEMORY PLANE COMPRISING A MATERIAL HAVING SUBSTANTIALLY RECTANGULAR HYSTERESIS CHARACTERISTICS, SAID MEMORY PLANE INCLUDING A LINEAR ARRAY OF HOLES THEREIN, SAID HOLES BEING ARRANGED IN GROUPS OF SIX FOR DEFINING BIT LOCATIONS THEREABOUT, FIRST DRIVE MEANS INCLUDING A FIRST CONDUCTOR THREADED THROUGH THE FIRST AND FOURTH HOLES OF EACH GROUP OF SIX HOLES FOR SWITCHING THE FLUX IN EACH OF THE LEGS THEREBETWEEN FROM A FIRST TO A SECOND FLUX CONDITION IN RESPONSE TO A PULSE OF A FIRST POLARITY APPLIED BY SAID FIRST DRIVE MEANS, SECOND DRIVE MEANS INCLUDING A PLURALITY OF SECOND CONDUCTORS EACH THREADED THROUGH THE SECOND AND THIRD HOLES OF A DIFFERENT ONE OF SAID GROUPS OF HOLES FOR SELECTIVELY INHIBITING THE SWITCHING OF FLUX IN THE LEGS THEREBETWEEN IN RESPONSE TO A SECOND POLARITY PLUS APPLIED BY SAID SECOND DRIVE
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |