US3139540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asynchronous binary counter register stage with flip-flop and gate utilizing plurality of interconnected nor circuits
Assignee: Unisys Corp
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Filing: 1962-09-27
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Granted: 1964-06-30
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Expires: 1982-09-27
Abstract
No abstract record available.
Inventors
- 👤 George T Osborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:25
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/58; H03K21/00; H03K23/002; H03K3/00; H03K3/02; H03K3/027; H03K3/037
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
FOR USE IN A BINARY REGISTER, IN COMBINATION: (A) A FIRST PAIR OF TWO-STATE NOR CIRCUITS CROSS-COUPLED TO FORM A BISTABLE FLIP-FLOP IN WHICH THE NOR CIRCUITS ARE IN OPPOSITE STATES; (B) A SECOND PAIR OF CROSS-COUPLED TWO-STATE NOR CIRCUITS; (C) A THIRD PAIR OF TWO-STATE NOR CIRCUITS, EACH CROSSCOUPLED WITH RESPECTIVELY DIFFERENT NOR CIRCUITS OF THE SECOND PAIR; (D) MEANS COUPLING THE OUTPUT OF EACH OF THE NOR CIRCUITS OF THE FIRST PAIR TO THE INPUT OF RESPECTIVELY DIFFERENT NOR CIRCUITS OF THE THIRD PAIR; (E) MEANS COUPLING THE OUTPUT OF EACH OF THE NOR CIRCUITS OF THE SECOND PAIR TO THE INPUT OF RESPECTIVELY DIFFERENT NOR CIRCUITS OF THE FIRST PAIR; (F) AND AN INPUT TERMINAL CONNECTED TO THE INPUT OF EACH NOR CIRCUIT OF SAID SECOND PAIR.
Claim 2
Dependent Claim
130 words
FOR USE IN A BINARY REGISTER, IN COMBINATION: (A) A FIRST PAIR OF TWO-STATE NOR CIRCUITS CROSS-COUPLED TO FORM A BISTABLE FLIP-FLOP IN WHICH THE NOR CIRCUITS ARE IN OPPOSITE STATES; (B) A SECOND PAIR OF CROSS-COUPLED TWO-STATE NOR CIRCUITS; (C) A THIRD PAIR OF TWO-STATE NOR CIRCUITS, EACH CROSSCOUPLED WITH RESPECTIVELY DIFFERENT NOR CIRCUITS OF THE SECOND PAIR; (D) MEANS COUPLING THE OUTPUT OF EACH OF THE NOR CIRCUITS OF THE FIRST PAIR TO THE INPUT OF RESPECTIVELY DIFFERENT NOR CIRCUITS OF THE THIRD PAIR; (E) MEANS COUPLING THE OUTPUT OF EACH OF THE NOR CIRCUITS OF THE SECOND PAIR TO THE INPUT OF RESPECTIVELY DIFFERENT NOR CIRCUITS OF THE FIRST PAIR; (F) AND AN INPUT TERMINAL CONNECTED TO THE INPUT OF EACH NOR CIRCUIT OF SAID SECOND PAIR.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |