US3341785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated wide-band amplifier system using negative feedback means including a thermally-coupled low-pass thermal filter
Assignee: Texas Instruments Inc
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Filing: 1964-07-13
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Granted: 1967-09-12
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Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Jerry D Merryman
- 👤 Stephen P Emmons
- 👤 Walter T Matzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:04
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/189; H03F3/19; H03F3/195; H03F1/00; H03F1/42; H03F1/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A WIDE-BAND AMPLIFIER SYSTEM COMPRISING: A DIRECT-COUPLED DIFFERENTIAL AMPLIFIER HAVING FIRST AND SECOND INPUTS AND CORRESPONDING FIRST AND SECOND OUTPUTS, FIRST NEGATIVE FEEDBACK CIRCUIT MEANS CONNECTING THE FIRST OUTPUT TO THE FIRST INPUT AND SECOND NEGATIVE FEEDBACK MEANS CONNECTING THE SECOND OUTPUT TO THE SECOND INPUT, EACH OF SAID FEEDBACK CIRCUIT MEANS COMPRISING A PHASE INVERTER AMPLIFIER AND A LOW-PASS THERMAL FILTER MEANS.
Claim 2
Dependent Claim
63 words
A WIDE-BAND AMPLIFIER SYSTEM COMPRISING: A DIRECT-COUPLED DIFFERENTIAL AMPLIFIER HAVING FIRST AND SECOND INPUTS AND CORRESPONDING FIRST AND SECOND OUTPUTS, FIRST NEGATIVE FEEDBACK CIRCUIT MEANS CONNECTING THE FIRST OUTPUT TO THE FIRST INPUT AND SECOND NEGATIVE FEEDBACK MEANS CONNECTING THE SECOND OUTPUT TO THE SECOND INPUT, EACH OF SAID FEEDBACK CIRCUIT MEANS COMPRISING A PHASE INVERTER AMPLIFIER AND A LOW-PASS THERMAL FILTER 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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |