US3307159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic shift register circuit
Assignee: AT&T Inc
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Filing: 1963-09-18
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Granted: 1967-02-28
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Expires: 1983-09-18
Abstract
No abstract record available.
Inventors
- 👤 Edward M Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:15
CPC Classifications
G; G11; G11C; G11C19/00; G11C19/02; G11C19/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A SHIFT REGISTER CIRCUIT COMPRISING A PLURALITY OF STAGES INCLUDING AN INITIAL STAGE, EACH OF SAID STAGES COMPRISING FIRST AND SECOND MULTIAPERTURED MAGNETIC CORES HAVING SUBSTANTIALLY RECTANGULAR HYSTERESIS CHARACTERISTICS SAID FIRST MULTIAPERTURED MAGNETIC CORE BEING RESPONSIVE TO INPUT SIGNALS OF A FIRST POLARITY ONLY, SAID SECOND MULTIAPERTURED MAGNETIC CORE BEING RESPONSIVE TO INPUT SIGNALS OF A SECOND POLARITY ONLY, INPUT MEANS COUPLED TO SAID FIRST AND SECOND MULTIAPERTURED MAGNETIC CORES OF SAID INITIAL STAGE FOR APPLYING SIGNALS OF FIRST AND SECOND POLARITIES THERETO, A PLURALITY OF TRANSFER LOOPS EACH COUPLING THE FIRST AND SECOND MULTIAPERTURED MAGNETIC CORES OF A DIFFERENT PAIR OF ADJACENT STAGES, AND A SINGLE ADVANCE CIRCUIT INCLUDING A SINGLE CONDUCTOR COUPLING IN A LIKE MANNER ALL OF SAID FIRST AND SECOND MULTIAPERTURED MAGNETIC CORES, EACH MULTIAPERTURED MAGNETIC CORE BEING COUPLED BY A TRANSFER LOOP AND SAID SINGLE CONDUCTOR
Claim 2
Dependent Claim
141 words
A SHIFT REGISTER CIRCUIT COMPRISING A PLURALITY OF STAGES INCLUDING AN INITIAL STAGE, EACH OF SAID STAGES COMPRISING FIRST AND SECOND MULTIAPERTURED MAGNETIC CORES HAVING SUBSTANTIALLY RECTANGULAR HYSTERESIS CHARACTERISTICS SAID FIRST MULTIAPERTURED MAGNETIC CORE BEING RESPONSIVE TO INPUT SIGNALS OF A FIRST POLARITY ONLY, SAID SECOND MULTIAPERTURED MAGNETIC CORE BEING RESPONSIVE TO INPUT SIGNALS OF A SECOND POLARITY ONLY, INPUT MEANS COUPLED TO SAID FIRST AND SECOND MULTIAPERTURED MAGNETIC CORES OF SAID INITIAL STAGE FOR APPLYING SIGNALS OF FIRST AND SECOND POLARITIES THERETO, A PLURALITY OF TRANSFER LOOPS EACH COUPLING THE FIRST AND SECOND MULTIAPERTURED MAGNETIC CORES OF A DIFFERENT PAIR OF ADJACENT STAGES, AND A SINGLE ADVANCE CIRCUIT INCLUDING A SINGLE CONDUCTOR COUPLING IN A LIKE MANNER ALL OF SAID FIRST AND SECOND MULTIAPERTURED MAGNETIC CORES, EACH MULTIAPERTURED MAGNETIC CORE BEING COUPLED BY A TRANSFER LOOP AND SAID SINGLE CONDUCTOR
References Cited (Backward Citations)
US3195117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |