US3289159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital comparator
Assignee: General Electric Co
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Filing: 1963-03-18
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Granted: 1966-11-29
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Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Morton P Woodard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:17
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/02; G06F7/026
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
141 words
A DIGITAL COMPARATOR IN WHICH AN UNKNOWN NUMBER, HAVING DIGITS REPRESENTED BY ELECTRICAL SIGNALS ON ONE OR MORE LINES, IS COMPARED IN MAGNITUDE WITH A SECOND DIGIT NUMBER, REPRESENTING A PREDETERMINED LIMIT, THE NUMBER, SYSTEM HAVING THE CHARACTERISTICS THAT EACH DIGIT IS ASSIGNED A FIXED VALUE AND THERE BEING A FIXED ORDER OF SIGNIFICANCE FOR THE DIGITS, THE COMPARATOR COMPRISING: (A) A TRUNK LINE PROVIDING A COMMON OUTPUT CONNECTION; (B) A PLURALITY OF SWITCHING CIRCUITS FOR RECEIVING RESPECTIVE UNKNOWN DIGIT SIGNALS AND COMPARING THEM WITH THE CORRESPONDING LIMIT DIGITS, EACH SWITCHING CIRCUIT INCLUDING: (1) TWO PARALLEL BRANCHES, EACH BRANCH HAVING A RECTIFIER WITH OPPOSITE POLARITY TERMINALS CONNECTED TO SAID TRUNK LINE, (2) SWITCHING MEANS FOR SELECTIVELY CLOSING THE CIRCUIT FOR THE UNKNOWN DIGIT SIGNALS THROUGH SAID BRANCHES TO SAID TRUNK LINE IN ACCORDANCE WITH A PREDETERMINED LIMIT NUMBER IN SUCH A
References Cited (Backward Citations)
US3137789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |