Patent US3131291A successfully refreshed from Google Patents.
US3131291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Associative memory
Assignee: International Business Machines Corp
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Filing: 1960-07-11
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Granted: 1964-04-28
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Walter K French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:31
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G11; G11C; G11C15/00; G11C15/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
AN ASSOCIATIVE MEMORY SYSTEM COMPRISING STORAGE MEANS FOR STORING WORDS IN THE FORM OF TAG DIGITS IDENTIFYING EACH WORD AND DATA DIGITS ASSOCIATED WITH EACH WORD, INDIVIDUAL READ-OUT CIRCUITS ASSOCIATED WITH EACH OF SAID WORDS, FIRST LATCHING MEANS FOR INHIBITING SOME OF SAID READ-OUT CIRCUITS WHILE ENABLING THE REMAINDER THEREOF, MEANS TO COMPARE ARGUMENT TAG DIGITS INTRODUCED TO SAID STORAGE MEANS WITH THE TAG DIGITS OF EACH OF SAID STORED WORDS IN SAID STORAGE MEANS, MEANS RESPONSIVE TO A MATCH BETWEEN SAID ARGUMENT TAG DIGITS AND THE TAG DIGITS OF ONE OF SAID STORED WORDS FOR CAUSING SAID FIRST LATCHING MEANS TO INHIBIT SAID SOME OF SAID INDIVIDUAL READ-OUT CIRCUITS, A SECOND LATCHING MEANS, SAID RESPONSIVE MEANS CAUSING SAID SECOND LATCHING MEANS TO INHIBIT THE REMAINDER OF SAID INDIVIDUAL READ-OUT CIRCUITS EXCEPT FOR SAID INDIVIDUAL READ-OUT CIRCUIT ASSOCIATED WITH SAID ONE
Claim 2
Dependent Claim
141 words
AN ASSOCIATIVE MEMORY SYSTEM COMPRISING STORAGE MEANS FOR STORING WORDS IN THE FORM OF TAG DIGITS IDENTIFYING EACH WORD AND DATA DIGITS ASSOCIATED WITH EACH WORD, INDIVIDUAL READ-OUT CIRCUITS ASSOCIATED WITH EACH OF SAID WORDS, FIRST LATCHING MEANS FOR INHIBITING SOME OF SAID READ-OUT CIRCUITS WHILE ENABLING THE REMAINDER THEREOF, MEANS TO COMPARE ARGUMENT TAG DIGITS INTRODUCED TO SAID STORAGE MEANS WITH THE TAG DIGITS OF EACH OF SAID STORED WORDS IN SAID STORAGE MEANS, MEANS RESPONSIVE TO A MATCH BETWEEN SAID ARGUMENT TAG DIGITS AND THE TAG DIGITS OF ONE OF SAID STORED WORDS FOR CAUSING SAID FIRST LATCHING MEANS TO INHIBIT SAID SOME OF SAID INDIVIDUAL READ-OUT CIRCUITS, A SECOND LATCHING MEANS, SAID RESPONSIVE MEANS CAUSING SAID SECOND LATCHING MEANS TO INHIBIT THE REMAINDER OF SAID INDIVIDUAL READ-OUT CIRCUITS EXCEPT FOR SAID INDIVIDUAL READ-OUT CIRCUIT ASSOCIATED WITH SAID ONE
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |