US3100837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adder-subtracter
Assignee: RCA Corp
•
Filing: 1960-08-22
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Granted: 1963-08-13
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Expires: 1980-08-22
Abstract
No abstract record available.
Inventors
- 👤 Jr William J Gesek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:41
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/50; G06F7/501; G06F2207/00; G06F2207/38; G06F2207/3804; G06F2207/386; G06F2207/3876
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
A BINARY ADDER-SUBTRACTER COMPRISING, A FLEXIBLE LOGIC NETWORK MADE UP OF FOUR "NONE" GATES FOR DERIVING FROM INPUT SIGNALS INDICATIVE OF BINARY DIGITS X, $, Y AND $ A SIGNAL INDICATIVE OF THE BINARY DIGIT Z IN RESPONSE TO CERTAIN CONTROL VOLTAGES APPLIED TO SAID NETWORK AND A SIGNAL INDICATIVE OF THE BINARY DIGIT $ IN RESPONSE TO OTHER CONTROL VOLTAGES APPLIED TO THE NETWORK, WHERE Z IS DEFINED BY THE BOOLEAN EQUATION Z=XY+$$; AND A NETWORK RECEPTIVE OF THE Z SIGNAL AND A CARRY SIGNAL $ FOR DERIVING THEREFROM SUM S AND CARRY CO OUTPUT SIGNALS DEFINED BY THE BOOLEAN EQUATIONS
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) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |