US3204117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential amplifier and level detector
Assignee: ILLUMITRONIC SYSTEMS CORP
•
Filing: 1962-09-17
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Granted: 1965-08-31
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Expires: 1982-09-17
Abstract
No abstract record available.
Inventors
- 👤 Richard A Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:27
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/21; H03F3/217; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A LEVEL DETECTOR AND MEMORY CIRCUIT COMPRISING IN COMBINATION A TRANSISTORIZED BLOCKING OSCILLATOR CIRCUIT, SAID BLOCKING OSCILLATOR CIRCUIT HAVING A TRANSFORMER WITH PRIMARY SECONDARY AND TERTIARY WINDINGS THEREON, AN INPUT CIRCUIT TO SAID BLOCKING OSCILLATOR COMPRISING A CONNECTION THROUGH THE PRIMARY OF SAID TRANSFORMER TO THE COLLECTOR OF SAID TRANSISTOR AND A FEED-BACK CIRCUIT FROM THE PRIMARY TO THE SECONDARY OF SAID TRANSFORMER TO THE EMITTER OF SAID TRANSISTOR, SAID TERTIARY WINDING HAVING MEANS TO CONNECT IT TO AN OUTPUT CIRCUIT, SAID TRANSISTOR HAVING MEANS ASSOCIATED THEREWITH TO NORMALLY BIAS SAID TRANSISTOR TO CUT OFF AND SAID TERTIARY WINDING BEING CONNECTED TO A UNJUNCTION TRANSISTOR HAVING A BASE ONE AND A BASE TWO, MEANS FOR APPLYING A PULSE THROUGH THE BASE OF THE TRANSISTOR OF THE BLOCKING OSCILLATOR CIRCUIT WHEREBY THE
Claim 2
Dependent Claim
131 words
A LEVEL DETECTOR AND MEMORY CIRCUIT COMPRISING IN COMBINATION A TRANSISTORIZED BLOCKING OSCILLATOR CIRCUIT, SAID BLOCKING OSCILLATOR CIRCUIT HAVING A TRANSFORMER WITH PRIMARY SECONDARY AND TERTIARY WINDINGS THEREON, AN INPUT CIRCUIT TO SAID BLOCKING OSCILLATOR COMPRISING A CONNECTION THROUGH THE PRIMARY OF SAID TRANSFORMER TO THE COLLECTOR OF SAID TRANSISTOR AND A FEED-BACK CIRCUIT FROM THE PRIMARY TO THE SECONDARY OF SAID TRANSFORMER TO THE EMITTER OF SAID TRANSISTOR, SAID TERTIARY WINDING HAVING MEANS TO CONNECT IT TO AN OUTPUT CIRCUIT, SAID TRANSISTOR HAVING MEANS ASSOCIATED THEREWITH TO NORMALLY BIAS SAID TRANSISTOR TO CUT OFF AND SAID TERTIARY WINDING BEING CONNECTED TO A UNJUNCTION TRANSISTOR HAVING A BASE ONE AND A BASE TWO, MEANS FOR APPLYING A PULSE THROUGH THE BASE OF THE TRANSISTOR OF THE BLOCKING OSCILLATOR CIRCUIT WHEREBY THE
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |