Patent US3202927A successfully refreshed from Google Patents.
US3202927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous operable negative feedback amplifier
Assignee: NEC Corp
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Filing: 1961-10-24
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Granted: 1965-08-24
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Expires: 1981-10-24
Abstract
No abstract record available.
Inventors
- 👤 Ishimoto Kunio
- 👤 Watanabe Hitoshi
- 👤 Sato Toshio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:25
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34; H03F1/36; H03F1/347; H03F1/52; H03F1/54; H03F1/542; H04; H04B; H04B1/00; H04B1/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A HIGHLY RELIABLE AMPLIFIER OF THE NEGATIVE FEEDBACK TYPE IN WHICH THE SAME INFORMATION IS AMPLIFIED IN EACH OF A PLURALITY OF PARALLEL AMPLIFYING PATHS, EACH HAVING AN INPUT AND OUTPUT SIDE, COMPRISING: A SIGNAL INFORMATION INPUT CIRCUIT; A HYBIRD INPUT ISOLATING CIRCUIT CONNECTED TO SAID SIGNAL INPUT CIRCUIT AND TO THE INPUT SIDE OF EACH OF SAID AMPLIFYING PATHS FOR SUPPLYING THE SAME INFORMATION SIGNAL TO EACH AMPLIFYING PATH AND FOR ISOLATING SAID INPUT SIDES FROM EACH OTHER; A HYBIRD OUTPUT ISOLATING CIRCUIT CONNECTED TO THE OUTPUT SIDE OF EACH AMPLIFYING PATH FOR COMBINING THE SIGNALS FROM SAID AMPLIFYING PATHS AND FORISOLATING SAID OUTPUT SIDES FROM EACH OTHER; AN OUTPUT CIRCUIT CONNECTED TO RECEIVE THE THUS COMBINED SIGNALS FROM SAID HYBIRD OUTPUT CIRCUIT; AND A SINGLE FEEDBACK PATH CONNECTED BETWEEN SAID OUTPUT AND SAID INFORMATION INPUT CIRCUIT FOR NEGATIVELY FEEDING BACK A COMPONENT OF SAID COMBINED SIGNAL TO SAID INFORMATION INPUT CIRCUIT.
Claim 2
Dependent Claim
153 words
A HIGHLY RELIABLE AMPLIFIER OF THE NEGATIVE FEEDBACK TYPE IN WHICH THE SAME INFORMATION IS AMPLIFIED IN EACH OF A PLURALITY OF PARALLEL AMPLIFYING PATHS, EACH HAVING AN INPUT AND OUTPUT SIDE, COMPRISING: A SIGNAL INFORMATION INPUT CIRCUIT; A HYBIRD INPUT ISOLATING CIRCUIT CONNECTED TO SAID SIGNAL INPUT CIRCUIT AND TO THE INPUT SIDE OF EACH OF SAID AMPLIFYING PATHS FOR SUPPLYING THE SAME INFORMATION SIGNAL TO EACH AMPLIFYING PATH AND FOR ISOLATING SAID INPUT SIDES FROM EACH OTHER; A HYBIRD OUTPUT ISOLATING CIRCUIT CONNECTED TO THE OUTPUT SIDE OF EACH AMPLIFYING PATH FOR COMBINING THE SIGNALS FROM SAID AMPLIFYING PATHS AND FORISOLATING SAID OUTPUT SIDES FROM EACH OTHER; AN OUTPUT CIRCUIT CONNECTED TO RECEIVE THE THUS COMBINED SIGNALS FROM SAID HYBIRD OUTPUT CIRCUIT; AND A SINGLE FEEDBACK PATH CONNECTED BETWEEN SAID OUTPUT AND SAID INFORMATION INPUT CIRCUIT FOR NEGATIVELY FEEDING BACK A COMPONENT OF SAID COMBINED SIGNAL TO SAID INFORMATION INPUT CIRCUIT.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |