Patent US2303752A successfully refreshed from Google Patents.
Patent US3196407A successfully refreshed from Google Patents.
US3196407A
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Superconductive associative memory system
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1961-05-15
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Granted: 1965-07-20
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Expires: 1981-05-15
Abstract
No abstract record available.
Inventors
- 👤 Paul M Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:42
CPC Classifications
G; G11; G11C; G11C15/00; G11C15/06; G11C11/00; G11C11/21; G11C11/44; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/831; Y10S505/833; Y10S505/834; Y10S505/835
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A SUPERCONDUCTIVE MEMORY SYSTEM COMPRISING A PLURALITY OF SUPERCONDUCTIVE MEMORY CELLS, A PLURALITY OF CIRCULATING CURRENT PERSISTOR CIRCUITS IN EACH MEMORY CELL FOR STORING BITS OF INFORMATION COMPRISING A COMPLETE RECORD, TRANSMITTING MEANS INTERCONNECTING CORRESPONDING INDIVIDUAL PERSISTOR CIRCUITS OF EACH MEMORY CELL WHEREBY BIT INFORMATION IS SIMULTANEOUSLY TRANSMITTED TO EACH MEMORY CELL, SAID TANSMITTING MEANS ADAPTED TO TRANSMIT KEY BITS OF INFORMATION ON SELECTED BIT POSITIONS ONLY, SAID KEY BITS OF INFORMATION UNIQUELY IDENTIFYING ONLY A SINGLE COMPLETE STORED RECORD, A SUPERCONDUCTIVE COMPARING MEANS LOCATED IN EACH BIT POSITION OF EVERY MEMORY CELL FOR COMPARING SAID STORED BIT OF INFORMATION WITH SAID KEY BIT OF INFORMATION, EACH MEMORY CELL COMPRISING A SUPERCONDUCTIVE SELECTING MEANS RESPONSIVE TO A TRUE COM-
Claim 2
Dependent Claim
119 words
A SUPERCONDUCTIVE MEMORY SYSTEM COMPRISING A PLURALITY OF SUPERCONDUCTIVE MEMORY CELLS, A PLURALITY OF CIRCULATING CURRENT PERSISTOR CIRCUITS IN EACH MEMORY CELL FOR STORING BITS OF INFORMATION COMPRISING A COMPLETE RECORD, TRANSMITTING MEANS INTERCONNECTING CORRESPONDING INDIVIDUAL PERSISTOR CIRCUITS OF EACH MEMORY CELL WHEREBY BIT INFORMATION IS SIMULTANEOUSLY TRANSMITTED TO EACH MEMORY CELL, SAID TANSMITTING MEANS ADAPTED TO TRANSMIT KEY BITS OF INFORMATION ON SELECTED BIT POSITIONS ONLY, SAID KEY BITS OF INFORMATION UNIQUELY IDENTIFYING ONLY A SINGLE COMPLETE STORED RECORD, A SUPERCONDUCTIVE COMPARING MEANS LOCATED IN EACH BIT POSITION OF EVERY MEMORY CELL FOR COMPARING SAID STORED BIT OF INFORMATION WITH SAID KEY BIT OF INFORMATION, EACH MEMORY CELL COMPRISING A SUPERCONDUCTIVE SELECTING MEANS RESPONSIVE TO A TRUE COM-
References Cited (Backward Citations)
US2736880A
Cited
US2775754A
Cited
US3048827A
Cited
US3108256A
Cited
US3108257A
Cited
US2983889A
Cited
US3031650A
Cited
US3021440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |