US3205481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Matrix selection circuit with bias means for nonselected circuits in one set of matrix coordinate drive circuits
Assignee: AT&T Inc
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Filing: 1962-12-03
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Granted: 1965-09-07
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Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Carlo G Corbella
- 👤 Philip A Harding
- 👤 Jr Eugene H Siegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:16
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN A MATRIX SELECTION CIRCUIT WHEREIN CROSSPOINT LOADS ARE ARRANGE TO INTERCONNECT MATRIX ROW AND COLUMN CIRCUITS, MEANS APPLYING CONTROL SIGNALS IN COINCIDENCE TO A SELECTED ONE OF SAID ROW CIRCUITS AND A SELECTED ONE OF SAID COLUMN CIRCUITS FOR ENERGIZING THE ONE OF SAID LOADS INTERCONNECTING SAID SELECTED ROW AND COLUMN CIRCUITS WITH DIFFERENT POLARITIES AT DIFFERENT TIMES, SEPARATE MEANS CONNECTED TO EACH OF SAID COLUMN CIRCUITS TO BIAS EACH OF SAID COLUMNS TO A POLAR-
Claim 2
Dependent Claim
77 words
IN A MATRIX SELECTION CIRCUIT WHEREIN CROSSPOINT LOADS ARE ARRANGE TO INTERCONNECT MATRIX ROW AND COLUMN CIRCUITS, MEANS APPLYING CONTROL SIGNALS IN COINCIDENCE TO A SELECTED ONE OF SAID ROW CIRCUITS AND A SELECTED ONE OF SAID COLUMN CIRCUITS FOR ENERGIZING THE ONE OF SAID LOADS INTERCONNECTING SAID SELECTED ROW AND COLUMN CIRCUITS WITH DIFFERENT POLARITIES AT DIFFERENT TIMES, SEPARATE MEANS CONNECTED TO EACH OF SAID COLUMN CIRCUITS TO BIAS EACH OF SAID COLUMNS TO A POLAR-
References Cited (Backward Citations)
US2947977A
Cited
US3054985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |