Patent US3188576A successfully refreshed from Google Patents.
US3188576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensation for d.c. amplifiers
Assignee: Consolidated Electrodynamics Corp
•
Filing: 1962-02-16
•
Granted: 1965-06-08
•
Expires: 1982-02-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Howard B Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/45; H03F3/45071; H03F3/45479; H03F1/00; H03F1/34
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A BALANCED AMPLIFIER STAGE COMPRISING A PAIR OF TRANSISTORS EACH HAVING AN EMITTER, A COLLECTOR, AND A BASE ELECTRODE, A POTENTIAL SOURCE, A PAIR OF LOAD IMPEDANCES CONNECTED RESPECTIVELY BETWEEN ONE TERMINAL OF THE POTENTIAL SOURCE AND THE TWO COLLECTOR ELECTRODES, AND MEANS INCLUDING FIRST AND SECOND RESISTORS CONNECTING RESPECTIVELY THE TWO EMITTERS TO THE OTHER TERMINAL OF THE POTENTIAL SOURCE, SAID FIRST RESISTOR HAVING A SUBSTANTIALLY ZERO TEMPERATURE COEFFICIENT AND THE SECOND RESISTOR HAVING A RELATIVELY LARGE SUBSTANTIALLY CONSTANT TEMPERATURE COEFFICIENT.
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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |