US3125648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eklov
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
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Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:47
CPC Classifications
H; H04; H04M; H04M9/00; H04M9/001; H04M9/08; H04M9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN A TWO-WAY AMPLIFIER HAVING TWO AMPLIFIER UNITS, ONE FOR EACH DIRECTION OF TRANSMISSION, AND EACH AMPLIFIER UNIT COMPRISING AT LEAST ONE STAGE HAVING VARIABLE GAIN, MEANS CONNECTING SAID AMPLIFIER UNITS TO HAVE A MODERATE INITIAL GAIN, EACH AMPLIFIER UNIT HAVING OPERATIVELY ASSOCIATED THEREWITH MEANS FOR DERIVING A FIRST CONTROL VOLTAGE FROM SIGNAL CURRENTS PASSED THROUGH THE RESPECTIVE AMPLIFIER UNIT WHEN THE STRENGTH OF THE SIGNAL CURRENTS EXCEEDS A PREDETERMINED THRESHOLD VALUE, MEANS FOR DERIVING A SECOND CONTROL VOLTAGE FROM THE SIGNAL CURRENTS PASSED THROUGH THE RESPECTIVE AMPLIFIER UNIT, MEANS FOR APPLYING SAID FIRST CONTROL VOLTAGE TO THE RESPECTIVE AMPLIFIER UNIT TO INCREASE ITS GAIN, MEANS FOR APPLYING SAID SECOND CONTROL VOLTAGE TO THE OTHER AMPLIFIER UNIT TO REDUCE ITS GAIN, AND MEANS FOR CONTROLLING THE MAGNITUDE OF SAID FIRST CONTROL VOLTAGE TO CAUSE THE INCREASE OF THE GAIN IN ONE AMPLIFIER UNIT TO BE LESS THAN THE SIMULTANEOUS REDUCTION OF THE GAIN OF THE OTHER AMPLIFIER UNIT.
Claim 2
Dependent Claim
158 words
IN A TWO-WAY AMPLIFIER HAVING TWO AMPLIFIER UNITS, ONE FOR EACH DIRECTION OF TRANSMISSION, AND EACH AMPLIFIER UNIT COMPRISING AT LEAST ONE STAGE HAVING VARIABLE GAIN, MEANS CONNECTING SAID AMPLIFIER UNITS TO HAVE A MODERATE INITIAL GAIN, EACH AMPLIFIER UNIT HAVING OPERATIVELY ASSOCIATED THEREWITH MEANS FOR DERIVING A FIRST CONTROL VOLTAGE FROM SIGNAL CURRENTS PASSED THROUGH THE RESPECTIVE AMPLIFIER UNIT WHEN THE STRENGTH OF THE SIGNAL CURRENTS EXCEEDS A PREDETERMINED THRESHOLD VALUE, MEANS FOR DERIVING A SECOND CONTROL VOLTAGE FROM THE SIGNAL CURRENTS PASSED THROUGH THE RESPECTIVE AMPLIFIER UNIT, MEANS FOR APPLYING SAID FIRST CONTROL VOLTAGE TO THE RESPECTIVE AMPLIFIER UNIT TO INCREASE ITS GAIN, MEANS FOR APPLYING SAID SECOND CONTROL VOLTAGE TO THE OTHER AMPLIFIER UNIT TO REDUCE ITS GAIN, AND MEANS FOR CONTROLLING THE MAGNITUDE OF SAID FIRST CONTROL VOLTAGE TO CAUSE THE INCREASE OF THE GAIN IN ONE AMPLIFIER UNIT TO BE LESS THAN THE SIMULTANEOUS REDUCTION OF THE GAIN OF THE OTHER AMPLIFIER UNIT.
References Cited (Backward Citations)
US2952006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |