US3108198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blocking oscillator frequency divider
Assignee: AT&T Inc
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Filing: 1961-08-18
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Granted: 1963-10-22
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Expires: 1981-08-18
Abstract
No abstract record available.
Inventors
- 👤 Norman E Lentz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:19
CPC Classifications
H; H03; H03B; H03B19/00; H03B19/06; H03B19/14; H03K; H03K23/00; H03K23/002; H03K3/00; H03K3/02; H03K3/26; H03K3/30; H03K5/00; H03K5/00006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A TRANSISTOR CIRCUIT COMPRISING, IN COMBINATION, A TRANSISTOR HAVING A BASE ELECTRODE, AN EMITTER ELECTRODE, AND A COLLECTOR ELECTRODE, A TRANSFORMER HAVING A PRIMARY WINDING AND A SECONDARY WINDING, BIASING MEANS CONNECTED BETWEEN SAID EMITTER AND COLLECTOR ELECTRODES BY MEANS OF SAID TRANSFORMER PRIMARY WINDING, MEANS FOR APPLYING AN OPERATING SIGNAL TO SAID BASE TO RENDER SAID TRANSISTOR CONDUCTIVE, REGENERATIVE MEANS TO ENHANCE SAID CONDUCTIVE CONDITION FOR A PREDETERMINED TIME INTERVAL, MEANS FOR DISSIPATING AT A CONTROLLED RATE THE MAGNETIC ENERGY STORED IN SAID TRANSFORMER DURING THE TIME INTERVAL SAID TRANSISTOR IS CONDUCTING, MEANS CONNECTED BETWEEN SAID SECONDARY WINDING OF SAID TRANSFORMER AND SAID BASE TO RENDER SAID TRANSISTOR NON-CONDUCTIVE AFTER SAID PREDETERMINED TIME INTERVAL UNTIL THE MAGNETIC ENERGY STORED IN SAID TRANSFORMER CORE HAS BEEN DISSIPATED.
Claim 2
Dependent Claim
127 words
A TRANSISTOR CIRCUIT COMPRISING, IN COMBINATION, A TRANSISTOR HAVING A BASE ELECTRODE, AN EMITTER ELECTRODE, AND A COLLECTOR ELECTRODE, A TRANSFORMER HAVING A PRIMARY WINDING AND A SECONDARY WINDING, BIASING MEANS CONNECTED BETWEEN SAID EMITTER AND COLLECTOR ELECTRODES BY MEANS OF SAID TRANSFORMER PRIMARY WINDING, MEANS FOR APPLYING AN OPERATING SIGNAL TO SAID BASE TO RENDER SAID TRANSISTOR CONDUCTIVE, REGENERATIVE MEANS TO ENHANCE SAID CONDUCTIVE CONDITION FOR A PREDETERMINED TIME INTERVAL, MEANS FOR DISSIPATING AT A CONTROLLED RATE THE MAGNETIC ENERGY STORED IN SAID TRANSFORMER DURING THE TIME INTERVAL SAID TRANSISTOR IS CONDUCTING, MEANS CONNECTED BETWEEN SAID SECONDARY WINDING OF SAID TRANSFORMER AND SAID BASE TO RENDER SAID TRANSISTOR NON-CONDUCTIVE AFTER SAID PREDETERMINED TIME INTERVAL UNTIL THE MAGNETIC ENERGY STORED IN SAID TRANSFORMER CORE HAS BEEN DISSIPATED.
References Cited (Backward Citations)
US3043992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |