US3588475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forward-backward digital counter circuit
Assignee: United States Department of the Navy
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Filing: 1969-03-21
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Granted: 1971-06-28
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Expires: 1989-03-21
Abstract
Abstract A SIMPLIFIED REVERSIBLE DIGITAL COUNTING CIRCUIT HAVING COMPONENTS OF A J-K FLIP-FLOP, AN OR GATE, AND AN INHIBIT GATE FOR EACH BIT OR STAGE OF THE COUNTER WITH AN INPUT OF PULSES TO BE COUNTED AND SELECTIVE INPUTS OF COMPLEMENTARY SIGNALS AND COMPLEMENTARY-PRESET SIGNALS TO PROVIDE FORWARD AND BACKWARD COUNT OF THE COUNT PULSE ON THE INPUT.
Inventors
- 👤 John E Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:15
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/40; H03K23/50; H03K23/56
Claims Analysis
Total Claims: 0
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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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |