US3199085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer with table lookup arithmetic unit feature
Assignee: International Business Machines Corp
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Filing: 1960-12-20
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Granted: 1965-08-03
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Expires: 1980-12-20
Abstract
No abstract record available.
Inventors
- 👤 William H Rhodes
- 👤 James G Brenza
- 👤 Wayne D Winger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:07
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/30; G06F9/30003; G06F9/30007; G06F9/3001; G06F15/00; G06F15/76; G06F15/78; G06F7/00; G06F7/38; G06F7/48; G06F7/491; G06F7/492; G06F7/493; G06F7/494; G06F7/495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A MEMORY-CENTERED COMPUTER, A MEMORY HAING A MULTIPLICITY OF DISTINCTLY ADDRESSABLE LOCATIONS, EACH CAPABLE OF STORING A DIGIT AND A FLAG, A CERTAIN GROUP OF SERIALLY-ADDRESSED LOCATIONS BEING RESERVED FOR AN ADD TABLE, AND OTHER GROUPS OF SERIALLY-ADDRESSED LOCATIONS CONTAINING AUGEND AND ADDEND OPERANDS, MEMORY ADDRESSING MEANS JOINTLY CONTROLLED BY THE DIGIT VALUE OF A PARTICULAR ORDER OF A FIRST OPERAND, AND BY THE COMBINED VALUE OF THE EQUAL ORDER OF THE SECOND OPERAND AND THE CARRY FROM THE ADJACENT ORDER, FOR ADDRESSING THE MEMORY LOCATION AT WHICH THE SUM AND CARRY ARE STORED AS A DIGIT AND A FLAG RESPECTIVELY, MEANS FOR ACCEPTING FROM SAID MEMORY LOCATION THE SUM VALUE, MEANS FOR STORING THAT VALUE, AND CARRY MEANS RESPONSIVE TO A FLAG FOR INTRODUCING THE CARRY INTO THE ADDITION OF THE NEXT HIGHER DIGITS OF SAID OPERANDS.
Claim 2
Dependent Claim
139 words
IN A MEMORY-CENTERED COMPUTER, A MEMORY HAING A MULTIPLICITY OF DISTINCTLY ADDRESSABLE LOCATIONS, EACH CAPABLE OF STORING A DIGIT AND A FLAG, A CERTAIN GROUP OF SERIALLY-ADDRESSED LOCATIONS BEING RESERVED FOR AN ADD TABLE, AND OTHER GROUPS OF SERIALLY-ADDRESSED LOCATIONS CONTAINING AUGEND AND ADDEND OPERANDS, MEMORY ADDRESSING MEANS JOINTLY CONTROLLED BY THE DIGIT VALUE OF A PARTICULAR ORDER OF A FIRST OPERAND, AND BY THE COMBINED VALUE OF THE EQUAL ORDER OF THE SECOND OPERAND AND THE CARRY FROM THE ADJACENT ORDER, FOR ADDRESSING THE MEMORY LOCATION AT WHICH THE SUM AND CARRY ARE STORED AS A DIGIT AND A FLAG RESPECTIVELY, MEANS FOR ACCEPTING FROM SAID MEMORY LOCATION THE SUM VALUE, MEANS FOR STORING THAT VALUE, AND CARRY MEANS RESPONSIVE TO A FLAG FOR INTRODUCING THE CARRY INTO THE ADDITION OF THE NEXT HIGHER DIGITS OF SAID OPERANDS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |