US3392344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear transistor circuit for negative impedance network
Assignee: AT&T Inc
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Filing: 1966-09-12
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Granted: 1968-07-09
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Expires: 1986-09-12
Abstract
No abstract record available.
Inventors
- 👤 Larned A Meacham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:25
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/32; H03F3/00; H03F3/34; H03F3/343; H03F3/3432; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H04B3/16; H04B3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN COMBINATION, FIRST AND SECOND COMPLEMENTARY TRANSISTORS EACH HAVING AT LEAST A BASE, EMITTER, AND COLLECTOR ELECTRODES, A FIRST DIODE HAVING ONE OF ITS TWO ELECTRODES CONNECTED TO THE BASE OF SAID FIRST TRANSISTOR WITH THE DIRECTION OF EASY CURRENT FLOW THROUGH SAID FIRST DIODE BEING OPPOSITE TO CURRENT FLOW THROUGH THE BASE-EMITTER JUNCTION OF SAID FIRST TRANSISTOR, A SECOND DIODE HAVING ONE OF ITS TWO ELECTRODES CONNECTED TO THE BASE OF SAID SECOND TRANSISTOR WITH THE DIRECTION OF EASY CURRENT FLOW THROUGH SAID SECOND DIODE BEING OPPOSITE TO CURRENT FLOW THROUGH THE BASE-EMITTER JUNCTION OF SAID SECOND TRANSISTOR, FIRST MEANS FOR CONNECTING THE BASE OF SAID FIRST TRANSISTOR TO THE COLLECTOR OF SAID SECOND TRANSISTOR, SECOND MEANS FOR CONNECTING THE BASE OF SAID SECOND TRANSISTOR TO THE COLLECTOR OF SAID FIRST TRANSISTOR, A FIRST IMPEDANCE MEANS FOR CONNECTING A POTENTIAL SOURCE BETWEEN THE EMITTER OF SAID FIRST TRANSISTOR AND THE OTHER OF SAID TWO ELECTRODES
Claim 2
Dependent Claim
156 words
IN COMBINATION, FIRST AND SECOND COMPLEMENTARY TRANSISTORS EACH HAVING AT LEAST A BASE, EMITTER, AND COLLECTOR ELECTRODES, A FIRST DIODE HAVING ONE OF ITS TWO ELECTRODES CONNECTED TO THE BASE OF SAID FIRST TRANSISTOR WITH THE DIRECTION OF EASY CURRENT FLOW THROUGH SAID FIRST DIODE BEING OPPOSITE TO CURRENT FLOW THROUGH THE BASE-EMITTER JUNCTION OF SAID FIRST TRANSISTOR, A SECOND DIODE HAVING ONE OF ITS TWO ELECTRODES CONNECTED TO THE BASE OF SAID SECOND TRANSISTOR WITH THE DIRECTION OF EASY CURRENT FLOW THROUGH SAID SECOND DIODE BEING OPPOSITE TO CURRENT FLOW THROUGH THE BASE-EMITTER JUNCTION OF SAID SECOND TRANSISTOR, FIRST MEANS FOR CONNECTING THE BASE OF SAID FIRST TRANSISTOR TO THE COLLECTOR OF SAID SECOND TRANSISTOR, SECOND MEANS FOR CONNECTING THE BASE OF SAID SECOND TRANSISTOR TO THE COLLECTOR OF SAID FIRST TRANSISTOR, A FIRST IMPEDANCE MEANS FOR CONNECTING A POTENTIAL SOURCE BETWEEN THE EMITTER OF SAID FIRST TRANSISTOR AND THE OTHER OF SAID TWO ELECTRODES
References Cited (Backward Citations)
US2842669A
Cited
US3161833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |