US3287546A
Expired / Lapsed
US
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Parity prediction apparatus for use with a binary adder
Assignee: International Business Machines Corp
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Filing: 1963-02-27
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Granted: 1966-11-22
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Expires: 1983-02-27
Abstract
No abstract record available.
Inventors
- 👤 Alan R Geller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:25
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/08; G06F11/10; G06F7/00; G06F7/38; G06F7/48; G06F7/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A PARITY PREDICTOR COMPRISING: A SOURCE OF GROUPED BINARY OPERANDS; AN ADDER, CONNECTED TO SAID SOURCE, FOR DERIVING DURING A FIRST TIME FROM EACH GROUP OF OPERANDS IN INPUT CARRY TO ANOTHER GROUP, DERIVING DURING A SECOND TIME FROM EACH GROUP OF OPERANDS AND THE INPUT CARRY TO EACH GROUP OF OPERANDS BINARY CARRIES FOR EACH GROUP, AND DERIVING DURING A THIRD TIME FROM EACH GROUP OF OPERANDS AND THE BINARY CARRIES FOR EACH GROUP BINARY SUMS FOR EACH GROUP; FIRST PARITY PREDICTION CIRCUITS, CONNECTED TO SAID SOURCE FOR DERIVING, DURING SAID FIRST TIME, FROM EACH GROUP OF OPERANDS A NUMBER OF FIRST PARTIAL PARITIES;
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |