Patent US1618982A successfully refreshed from Google Patents.
US3372269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiplier for simultaneously generating partial products of various bits of the multiplier
Assignee: International Business Machines Corp
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Filing: 1965-10-22
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Granted: 1968-03-05
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Olin L Macsorley
- 👤 Frank R Bielawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:23
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/52; G06F7/523; G06F7/533; G06F7/5334; G06F7/5336
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
248 words
A DEVICE FOR DERIVING THE PRODUCT OF TWO NUMBERS BY GENERATING AND ACCUMULATING PARTIAL PRODUCTS, SAID DEVICE INCLUDING MEANS TO STORE SIGNALS REPRESENTATIVE OF A MULTIPLICAND, MEANS TO STORE SIGNALS REPRESENTATIVE OF A MULTIPLIER, DECODER MEANS COUPLED TO THE MEANS FOR STORING SIGNALS REPRESENTATIVE OF THE MULTIPLIER WHICH ACCEPTS SIGNALS IN GROUPS STARTING AT THE RADIX POINT AND CONTAINING EQUAL NUMBERS OF SIGNALS IN EACH GROUP, THE DECODER MEANS OPERATING IN RESPONSE TO SIGNALS OF EACH GROUP TO PROVIDE SIGNALS REPRESENTING THE NUMERICAL VALUE OF THE GROUP IF IT HAS AN EVEN VALUE OR REPRESENTING A VALUE OF ONE GREATER THAN THE NUMERCIAL VALUE IF THE VALUE OF THE GROUP IS ODD, MEANS TO REPRESENT THE SIGNALS OF EACH GROUP AS A POSITIVE NUMBER IF THE SIGNALS OF THE NEXT HIGHER ORDER GROUP REPRESENT AN EVEL VALUE, MEANS TO OBTAIN THE DIFFERENCE BETWEEN THE VALUE REPRESENTED BY THE SIGNALS OF EACH GROUP AND THE RADIX VALUE AND REPRESENT THE RESULT AS A NEGATIVE NUMBER IF THE NEXT HIGHER ORDER GROUP HAS AN ODD VALUE, MULTIPLE GENERATION MEANS COUPLED TO THE MEANS FOR STORING SIGNALS REPRESENTATIVE OF THE MULTIPLICAND FOR OBTAINING ALL EVEN MULTIPLES OF THE MULTIPLICAND UP TO AND INCLUDING THE RADIX TIMES THE MULTIPLICAND, THE DECODER MEANS BEING COUPLED TO THE MULTIPLE GENERATOR MEANS FOR SELECTING A CORRESPONDING MULTIPLE OF THE MULTIPLICAND IN THE MULTIPLE GENERATOR MEANS, PARTIAL PRODUCT ACCUMULATING MEANS COUPLED TO THE MULTIPLE GENERATION MEANS FOR ACCUMULATING THE SELECTED MULTIPLES FROM SAID MULTIPLE GENERATION MEANS.
Claim 2
Independent Claim
248 words
A DEVICE FOR DERIVING THE PRODUCT OF TWO NUMBERS BY GENERATING AND ACCUMULATING PARTIAL PRODUCTS, SAID DEVICE INCLUDING MEANS TO STORE SIGNALS REPRESENTATIVE OF A MULTIPLICAND, MEANS TO STORE SIGNALS REPRESENTATIVE OF A MULTIPLIER, DECODER MEANS COUPLED TO THE MEANS FOR STORING SIGNALS REPRESENTATIVE OF THE MULTIPLIER WHICH ACCEPTS SIGNALS IN GROUPS STARTING AT THE RADIX POINT AND CONTAINING EQUAL NUMBERS OF SIGNALS IN EACH GROUP, THE DECODER MEANS OPERATING IN RESPONSE TO SIGNALS OF EACH GROUP TO PROVIDE SIGNALS REPRESENTING THE NUMERICAL VALUE OF THE GROUP IF IT HAS AN EVEN VALUE OR REPRESENTING A VALUE OF ONE GREATER THAN THE NUMERCIAL VALUE IF THE VALUE OF THE GROUP IS ODD, MEANS TO REPRESENT THE SIGNALS OF EACH GROUP AS A POSITIVE NUMBER IF THE SIGNALS OF THE NEXT HIGHER ORDER GROUP REPRESENT AN EVEL VALUE, MEANS TO OBTAIN THE DIFFERENCE BETWEEN THE VALUE REPRESENTED BY THE SIGNALS OF EACH GROUP AND THE RADIX VALUE AND REPRESENT THE RESULT AS A NEGATIVE NUMBER IF THE NEXT HIGHER ORDER GROUP HAS AN ODD VALUE, MULTIPLE GENERATION MEANS COUPLED TO THE MEANS FOR STORING SIGNALS REPRESENTATIVE OF THE MULTIPLICAND FOR OBTAINING ALL EVEN MULTIPLES OF THE MULTIPLICAND UP TO AND INCLUDING THE RADIX TIMES THE MULTIPLICAND, THE DECODER MEANS BEING COUPLED TO THE MULTIPLE GENERATOR MEANS FOR SELECTING A CORRESPONDING MULTIPLE OF THE MULTIPLICAND IN THE MULTIPLE GENERATOR MEANS, PARTIAL PRODUCT ACCUMULATING MEANS COUPLED TO THE MULTIPLE GENERATION MEANS FOR ACCUMULATING THE SELECTED MULTIPLES FROM SAID MULTIPLE GENERATION MEANS.
References Cited (Backward Citations)
US2941720A
Cited
US3123707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |