US3260955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential amplifier
Assignee: Individual
•
Filing: 1964-05-28
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Granted: 1966-07-12
•
Expires: 1984-05-28
Abstract
No abstract record available.
Inventors
- 👤 Franklin F Offner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:52
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/30; H03F1/302; H03F3/00; H03F3/30; H03F3/3066; H03F3/3083; H03F3/3086; H03F3/3088; H03F3/34; H03F3/343; H03F3/45; H03F3/45071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN AN APPARATUS FOR PROVIDING AMPLIFICATION FOR THE DIFFERENCE BETWEEN FIRST AND SECOND SIGNAL COMPONENTS OF A COMMON DIRECT CURRENT INPUT SIGNAL, THE COMBINATION COMPRISING MEANS APPLYING SAID SIGNLA COMPONENTS RESPECTIVELY BETWEEN A FIRST INPUT TERMINAL AND A REFERENCE TERMINAL AND BETWEEN A SECOND INPUT TERMINAL AND SAID REFERENCE TERMINAL, A FIRST SIGNAL AMPLIFIER TRANSMITTING MEANS FOR TRANSMITTING SAID FIRST SIGNAL COMPONENT WITHOUT CHANGING THE PHASE THEREOF, SECOND SIGNAL AMPLIFIER TRANSMITTING MEANS FOR TRANSMITTING SAID SECOND SIGNAL COMPONENT AND WHICH INCLUDES MEANS REVERSING THE PHASE THEREOF, SAID FIRST ANS SECOND SIGNAL AMPLIFIER TRANSMITTING MEANS BEING CHARACTERIZED BY HAVING THEIR RESPECTIVE SIGNAL TRANSMISSIONS DEPENDENT SUBSTANTIALLY ONLY UPON RESISTANCE VALUES AND INDEPENDENT OF AMPLIFICATION ELEMENT CHARACTERISTICS, RESISTANCE SUMMING MEANS CONNECTED TO THE OUTPUTS OF SAID FIRST AND SECOND AMPLIFIER TRANSMITTING MEANS AND WHICH INCLUDES A SUMMING POINT, AND FURTHER AMPLIFYING MEANS CONNECTED TO SAID SUMMING POINT ON SAID RESISTANCE SUMMING MEANS.
Claim 2
Dependent Claim
149 words
IN AN APPARATUS FOR PROVIDING AMPLIFICATION FOR THE DIFFERENCE BETWEEN FIRST AND SECOND SIGNAL COMPONENTS OF A COMMON DIRECT CURRENT INPUT SIGNAL, THE COMBINATION COMPRISING MEANS APPLYING SAID SIGNLA COMPONENTS RESPECTIVELY BETWEEN A FIRST INPUT TERMINAL AND A REFERENCE TERMINAL AND BETWEEN A SECOND INPUT TERMINAL AND SAID REFERENCE TERMINAL, A FIRST SIGNAL AMPLIFIER TRANSMITTING MEANS FOR TRANSMITTING SAID FIRST SIGNAL COMPONENT WITHOUT CHANGING THE PHASE THEREOF, SECOND SIGNAL AMPLIFIER TRANSMITTING MEANS FOR TRANSMITTING SAID SECOND SIGNAL COMPONENT AND WHICH INCLUDES MEANS REVERSING THE PHASE THEREOF, SAID FIRST ANS SECOND SIGNAL AMPLIFIER TRANSMITTING MEANS BEING CHARACTERIZED BY HAVING THEIR RESPECTIVE SIGNAL TRANSMISSIONS DEPENDENT SUBSTANTIALLY ONLY UPON RESISTANCE VALUES AND INDEPENDENT OF AMPLIFICATION ELEMENT CHARACTERISTICS, RESISTANCE SUMMING MEANS CONNECTED TO THE OUTPUTS OF SAID FIRST AND SECOND AMPLIFIER TRANSMITTING MEANS AND WHICH INCLUDES A SUMMING POINT, AND FURTHER AMPLIFYING MEANS CONNECTED TO SAID SUMMING POINT ON SAID RESISTANCE SUMMING MEANS.
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) | 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 |