US3264571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensated alternating-current amplifier
Assignee: Individual
•
Filing: 1963-02-05
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Granted: 1966-08-02
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Expires: 1983-02-05
Abstract
No abstract record available.
Inventors
- 👤 James D Meindl
- 👤 Jr Octavius Pitzalis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:22
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/30; H03F1/302
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A NETWORK FOR COMPENSATING FOR THE IMPEDANCE VARIATION WITH RESPECT TO TEMPERATURE OF A TRANSISTOR CIRCUIT COMPRISING A COMMON-EMITTER-CONNECTED TRANSISTOR HAVING EMITTER, COLLECTOR, AND BASE ELECTRODES; A SOURCE OF NEGATIVE VOLTAGE WITH RESPECT TO GROUND; A FIRST TRANSISTORIMPEDANCE-COMPENSATING THERMISTOR CONNECTED BETWEEN SAID BASE ELECTRODE AND SAID SOURCE OF NEGATIVE VOLTAGE; A SECOND, TRANSISTOR-IMPEDANCE-COMPENSATING THERMISTOR CONNECTED BETWEEN SAID BASE ELECTRODE AND SAID GROUND; A THIRD, TRANSISTOR-IMPEDANCE-COMPENSATING THERMISTOR AND A FOURTH, DIRECT-CURRENT, BIAS-COMPENSATING THERMISTOR CONNECTED IN SERIES BETWEEN SAID EMITTER ELECTRODE AND SAID GROUND; A BY-PASS CONDENSER CONNECTED ACROSS SAID
Claim 2
Dependent Claim
88 words
A NETWORK FOR COMPENSATING FOR THE IMPEDANCE VARIATION WITH RESPECT TO TEMPERATURE OF A TRANSISTOR CIRCUIT COMPRISING A COMMON-EMITTER-CONNECTED TRANSISTOR HAVING EMITTER, COLLECTOR, AND BASE ELECTRODES; A SOURCE OF NEGATIVE VOLTAGE WITH RESPECT TO GROUND; A FIRST TRANSISTORIMPEDANCE-COMPENSATING THERMISTOR CONNECTED BETWEEN SAID BASE ELECTRODE AND SAID SOURCE OF NEGATIVE VOLTAGE; A SECOND, TRANSISTOR-IMPEDANCE-COMPENSATING THERMISTOR CONNECTED BETWEEN SAID BASE ELECTRODE AND SAID GROUND; A THIRD, TRANSISTOR-IMPEDANCE-COMPENSATING THERMISTOR AND A FOURTH, DIRECT-CURRENT, BIAS-COMPENSATING THERMISTOR CONNECTED IN SERIES BETWEEN SAID EMITTER ELECTRODE AND SAID GROUND; A BY-PASS CONDENSER CONNECTED ACROSS SAID
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |