US3144564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cascaded differential amplifiers with positive and negative feedback
Assignee: Honeywell Inc
•
Filing: 1960-12-29
•
Granted: 1964-08-11
•
Expires: 1980-12-29
Abstract
No abstract record available.
Inventors
- 👤 Daniel J Sikorra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:50
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34; H03F3/00; H03F3/45; H03F3/45071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
AN AMPLIFIER COMPRISING: FIRST AND SECOND DIFFERENCE AMPLIFIERS EACH HAVING INPUT AND OUTPUT TERMINALS; MEANS CONNECTING THE OUTPUT TERMINALS OF SAID FIRST DIFFERENCE AMPLIFIER TO THE INPUT TERMINALS OF SAID SECOND DIFFERENCE AMPLIFIER; MEANS ADAPTED TO CONNECT THE INPUT TERMINALS OF SAID FIRST DIFFERENCE AMPLIFIER TO A SOURCE OF INPUT SIGNALS; MEANS BIASING THE OUTPUT TERMINALS OF SAID SECOND DIFFERENCE AMPLIFIER TO SUBSTANTIALLY ZERO POTENTIAL DUR-
Claim 2
Dependent Claim
66 words
AN AMPLIFIER COMPRISING: FIRST AND SECOND DIFFERENCE AMPLIFIERS EACH HAVING INPUT AND OUTPUT TERMINALS; MEANS CONNECTING THE OUTPUT TERMINALS OF SAID FIRST DIFFERENCE AMPLIFIER TO THE INPUT TERMINALS OF SAID SECOND DIFFERENCE AMPLIFIER; MEANS ADAPTED TO CONNECT THE INPUT TERMINALS OF SAID FIRST DIFFERENCE AMPLIFIER TO A SOURCE OF INPUT SIGNALS; MEANS BIASING THE OUTPUT TERMINALS OF SAID SECOND DIFFERENCE AMPLIFIER TO SUBSTANTIALLY ZERO POTENTIAL DUR-
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |