US3248527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic multiplier
Assignee: International Business Machines Corp
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Filing: 1962-12-28
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Granted: 1966-04-26
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Expires: 1982-12-28
Abstract
No abstract record available.
Inventors
- 👤 William E Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:08
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/491; G06F7/4915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
IN A COMPUTER SYSTEM FOR MULTIPLICATION BY OVER AND OVER ADDITION: MULTIPLIER COUNTER MEANS, MEANS FOR ENTERING A DIGIT OF THE MULTIPLIER INTO SAID MULTIPLIER COUNTER MEANS, ACCUMULATING MEANS, SINGLE DIGIT MULTIPLICAND REGISTER MEANS, MEANS UNDER CONTROL OF SAID MULTIPLIER COUNTER CONNECTING THE OUTPUT OF SAID MULTIPLICAND REGISTER TO SAID ACCUMULATING MEANS WHEREBY AN OPERATION BY SAID ACCUMULATING MEANS DECREASES THE VALUE IN SAID MULTIPLIER COUNTER AND SUCCESSIVE OPERATIONS OCCUR UNTIL THE MULTIPLIER COUNTER STANDS AT ZERO, CARRY REGISTER MEANS, MEANS CONNECTING SAID CARRY REGISTER TO SAID ACCUMULATING MEANS TO ACCUMULATE CARRY SIGNALS THEREFROM, MEANS FOR GENERATING A NEXT PARTIAL PRODUCT COMPRISING THE PRODUCT OF A MULTIPLIER DIGIT TIMES ANOTHER MULTIPLICAND DIGIT, MEANS FOR INCLUDING THE VALUE IN SAID CARRY REGISTER INTO SAID ACCUMULATING MEANS AS A FACTOR OF THE NEXT PARTIAL PRODUCT, MEANS FOR INCLUDING A PREVIOUS PARTIAL PRODUCT RELATED TO THAT ORDER AS A FACTOR IN SAID NEXT PARTIAL PRODUCT, MEANS FOR REPEATING THE PROCESS OF SUMMING THE PARTIAL PRODUCTS OF EACH MULTIPLIER DIGIT TIMES EACH MULTIPLICAND DIGIT, MEANS FOR SHIFTING THE POSITION OF PARTIAL PRODUCTS RESULTING FROM A SUCCEEDING MULTIPLIER DIGIT ONE STORAGE POSITION, AND MEANS FOR SUMMING ALL PARTIAL PRODUCTS OF A RELATED ORDER OF THE PRODUCT WHEREBY A COMPLETE PRODUCT IS FORMED.
Claim 2
Dependent Claim
207 words
IN A COMPUTER SYSTEM FOR MULTIPLICATION BY OVER AND OVER ADDITION: MULTIPLIER COUNTER MEANS, MEANS FOR ENTERING A DIGIT OF THE MULTIPLIER INTO SAID MULTIPLIER COUNTER MEANS, ACCUMULATING MEANS, SINGLE DIGIT MULTIPLICAND REGISTER MEANS, MEANS UNDER CONTROL OF SAID MULTIPLIER COUNTER CONNECTING THE OUTPUT OF SAID MULTIPLICAND REGISTER TO SAID ACCUMULATING MEANS WHEREBY AN OPERATION BY SAID ACCUMULATING MEANS DECREASES THE VALUE IN SAID MULTIPLIER COUNTER AND SUCCESSIVE OPERATIONS OCCUR UNTIL THE MULTIPLIER COUNTER STANDS AT ZERO, CARRY REGISTER MEANS, MEANS CONNECTING SAID CARRY REGISTER TO SAID ACCUMULATING MEANS TO ACCUMULATE CARRY SIGNALS THEREFROM, MEANS FOR GENERATING A NEXT PARTIAL PRODUCT COMPRISING THE PRODUCT OF A MULTIPLIER DIGIT TIMES ANOTHER MULTIPLICAND DIGIT, MEANS FOR INCLUDING THE VALUE IN SAID CARRY REGISTER INTO SAID ACCUMULATING MEANS AS A FACTOR OF THE NEXT PARTIAL PRODUCT, MEANS FOR INCLUDING A PREVIOUS PARTIAL PRODUCT RELATED TO THAT ORDER AS A FACTOR IN SAID NEXT PARTIAL PRODUCT, MEANS FOR REPEATING THE PROCESS OF SUMMING THE PARTIAL PRODUCTS OF EACH MULTIPLIER DIGIT TIMES EACH MULTIPLICAND DIGIT, MEANS FOR SHIFTING THE POSITION OF PARTIAL PRODUCTS RESULTING FROM A SUCCEEDING MULTIPLIER DIGIT ONE STORAGE POSITION, AND MEANS FOR SUMMING ALL PARTIAL PRODUCTS OF A RELATED ORDER OF THE PRODUCT WHEREBY A COMPLETE PRODUCT IS FORMED.
References Cited (Backward Citations)
US3157779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |