US3159792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible counter circuit with means for detecting a predetermined total count for controlling counter reversal
Assignee: Beckman Coulter Inc
•
Filing: 1961-09-05
•
Granted: 1964-12-01
•
Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 George F Metz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:46
CPC Classifications
H; H03; H03K; H03K21/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
A REVERSIBLE COUNTER FOR COUNTING INPUT SIGNALS WHICH DISPLAYS THE OUTPUT AS AN ALGEBRAIC VALUE COMPRISING FIRST MEANS FOR COUNTING INPUT SIGNALS APPEARING AT AN INPUT TERMINAL THEREOF IN BOTH FORWARD AND BACKWARD DIRECTIONS AND INDICATING THE ABSOLUTE VALUE OF SAID OUTPUT ALGEBRAIC VALUE, SECOND MEANS COUPLED WITH SAID FIRST MEANS FOR DETECTING A TOTAL COUNT OF ZERO IN SAID FIRST MEANS, FORWARD AND BACKWARD SELECTION MEANS FOR PRESELECTING WHETHER THE INPUT SIGNALS ARE TO BE ADDED OR SUBTRACTED, AND CONTROL MEANS CONNECTED WITH SAID FIRST MEANS, SAID SECOND MEANS AND SAID SELECTION MEANS FOR RESPONDING TO SAID SECOND MEANS AND SAID SELECTION MEAN FOR CONTROLLING IN WHICH DIRECTION AN INPUT SIGNAL IS TO BE COUNTED BY SAID FIRST MEANS.
References Cited (Backward Citations)
US2462275A
Cited
US2841705A
Cited
US2789766A
Cited
US2880934A
Cited
US2970759A
Cited
US3076901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |