US3260950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor coupled feedback amplifier
Assignee: AT&T Inc
•
Filing: 1963-11-08
•
Granted: 1966-07-12
•
Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 Veikko R Saari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:35
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34; H03F1/36
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
A NEGATIVE FEEDBACK AMPLIFIER CIRCUIT COMPRISING, IN COMBINATION, AN AMPLIFIER HAVING AN INPUT AND AN OUTPUT, A CIRCUIT INPUT TERMINAL AND A CIRCUIT OUTPUT TERMINAL, A NEGATIVE FEEDBACK NETWORK HAVING TWO TERMINALS, A FIRST CAPACITOR DIRECTLY CONNECTING SAID AMPLIFER INPUT TERMINAL TO SAID CIRCUIT INPUT TERMINAL, A SAID CAPACITOR DIRECTLY CONNECTING A FIRST TERMINAL OF SAID NEGATIVE FEEDBACK NETWORK TO SAID CIRCUIT INPUT TERMINAL, A THIRD CAPACITOR DIRECTLY CONNECTING SAID AMPLIFIER OUTPUT TO SAID CIRCUIT OUTPUT TERMINAL, AND A FOURTH CAPACITOR DIRECTLY CONNECTING THE SECOND TERMINAL OF SAID FEEDBACK NETWORK TO SAID CIRCUIT OUTPUT TERMINAL.
References Cited (Backward Citations)
US2544344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |