US3296426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computing device
Assignee: Westinghouse Electric Corp
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Filing: 1963-07-05
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Granted: 1967-01-03
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 John R Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:06
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/50; G06F7/504; G06F15/00; G06F15/76; G06F15/80; G06F15/8007; G06F15/8023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
219 words
APPARATUS FOR ADDING TWO NUMBERS EACH REPRESENTED BY A PLURALITY OF OPERAND BITS HAVING EITHER A FIRST OR SECOND SIGNAL VALUE COMPRISING; A SUM FLIP-FLOP HAVING AT LEAST TWO INPUT TERMINALS AND TWO STATES OF OPERATION; A CARRY FLIP-FLOP HAVING AT LEAST ONE INPUT TERMINAL AND TWO STATES OF OPERATION; FIRST AND SECOND GATING DEVICES EACH HAVING A PLURALITY OF INPUTS WITH ONE OF SAID INPUTS OPERABLY CONNECTED TO SAID SUM FLIP-FLOP SUCH THAT WHEN IT IS SET, SAID SECOND GATING DEVICE IS ENABLED AND WHEN IT IS RESET, SAID FIRST GATING DEVICE IS ENABLED, SAID FIRST GATING DEVICE HAVING OUTPUT MEANS OPERATIVELY CONNECTED TO ONE INPUT TERMINAL OF SAID SUM FLIP-FLOP, SAID SECOND GATING DEVICE HAVING OUTPUT MEANS OPERATIVELY CONNECTED TO ANOTHER INPUT TERMINAL OF SAID SUM FLIP-FLOP AND SAID ONE INPUT TERMINAL OF SAID CARRY FLIP-FLOP; GATING MEANS RESPONSIVE TO THE STATE OF OPERATION OF SAID CARRY FLIP-FLOP FOR PROVIDING A SIGNAL TO SET SAID SUM FLIP-FLOP IF SAID CARRY FLIP-FLOP IS SET; SAID FIRST AND SECOND GATING DEVICES ADDITIONALLY RESPONSIVE TO AN ITH OPERAND BIT OF SAID TWO NUMBERS SUCH THAT IF EITHER BIT IS PRESENT SAID FIRST GATING DEVICE WILL SET SAID SUM FLIP-FLOP IF IT IS RESET AND WILL RESET SAID SUM FLIP-FLOP AND SET SAID CARRY FLIP-FLOP IF SAID SUM FLIP-FLOP IS SET.
Claim 2
Dependent Claim
219 words
APPARATUS FOR ADDING TWO NUMBERS EACH REPRESENTED BY A PLURALITY OF OPERAND BITS HAVING EITHER A FIRST OR SECOND SIGNAL VALUE COMPRISING; A SUM FLIP-FLOP HAVING AT LEAST TWO INPUT TERMINALS AND TWO STATES OF OPERATION; A CARRY FLIP-FLOP HAVING AT LEAST ONE INPUT TERMINAL AND TWO STATES OF OPERATION; FIRST AND SECOND GATING DEVICES EACH HAVING A PLURALITY OF INPUTS WITH ONE OF SAID INPUTS OPERABLY CONNECTED TO SAID SUM FLIP-FLOP SUCH THAT WHEN IT IS SET, SAID SECOND GATING DEVICE IS ENABLED AND WHEN IT IS RESET, SAID FIRST GATING DEVICE IS ENABLED, SAID FIRST GATING DEVICE HAVING OUTPUT MEANS OPERATIVELY CONNECTED TO ONE INPUT TERMINAL OF SAID SUM FLIP-FLOP, SAID SECOND GATING DEVICE HAVING OUTPUT MEANS OPERATIVELY CONNECTED TO ANOTHER INPUT TERMINAL OF SAID SUM FLIP-FLOP AND SAID ONE INPUT TERMINAL OF SAID CARRY FLIP-FLOP; GATING MEANS RESPONSIVE TO THE STATE OF OPERATION OF SAID CARRY FLIP-FLOP FOR PROVIDING A SIGNAL TO SET SAID SUM FLIP-FLOP IF SAID CARRY FLIP-FLOP IS SET; SAID FIRST AND SECOND GATING DEVICES ADDITIONALLY RESPONSIVE TO AN ITH OPERAND BIT OF SAID TWO NUMBERS SUCH THAT IF EITHER BIT IS PRESENT SAID FIRST GATING DEVICE WILL SET SAID SUM FLIP-FLOP IF IT IS RESET AND WILL RESET SAID SUM FLIP-FLOP AND SET SAID CARRY FLIP-FLOP IF SAID SUM FLIP-FLOP IS SET.
References Cited (Backward Citations)
US2898040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |