US3134054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage level detector circuits
Assignee: AT&T Inc
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Filing: 1961-12-04
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Granted: 1964-05-19
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Cronier Richard E Le
- 👤 Edward E Schwenzfeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:25
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/70; H04; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04L25/4917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A VOLTAGE LEVEL DETECTOR COMPRISING A PLURALITY OF DIFFERENTIALLY EXCITED FERREEDS EACH HAVING FIRST AND SECOND WINDINGS CONNECTED IN SERIES, MEANS CONNECTED TO THE FIRST WINDINGS OF ALL OF SAID FERREEDS FOR APPLYING ANY ONE OF A PLURALITY OF VOLTAGE LEVELS, VOLTAGE SOURCE BIASING MEANS INDIVIDUALLY CONNECTED TO THE SECOND ONES OF ALL OF SAID WINDINGS, AND A PLURALITY OF VOLTAGE BREAKDOWN MEANS EACH HAVING A DIFFERENT BREAKDOWN VOLTAGE CONNECTED TO RESPECTIVE ONES OF THE JUNCTIONS OF SAID WIND-
Claim 2
Dependent Claim
79 words
A VOLTAGE LEVEL DETECTOR COMPRISING A PLURALITY OF DIFFERENTIALLY EXCITED FERREEDS EACH HAVING FIRST AND SECOND WINDINGS CONNECTED IN SERIES, MEANS CONNECTED TO THE FIRST WINDINGS OF ALL OF SAID FERREEDS FOR APPLYING ANY ONE OF A PLURALITY OF VOLTAGE LEVELS, VOLTAGE SOURCE BIASING MEANS INDIVIDUALLY CONNECTED TO THE SECOND ONES OF ALL OF SAID WINDINGS, AND A PLURALITY OF VOLTAGE BREAKDOWN MEANS EACH HAVING A DIFFERENT BREAKDOWN VOLTAGE CONNECTED TO RESPECTIVE ONES OF THE JUNCTIONS OF SAID WIND-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |