US3304513A
Expired / Lapsed
US
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Differential direct-current amplifier
Assignee: Individual
•
Filing: 1964-05-28
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Granted: 1967-02-14
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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 13:44
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
62 words
A DIFFERENTIAL AMPLIFIER INCLUDING A FIRST AMPLIFIER SECTION ISOLATED FROM GROUND, SAID FIRST AMPLIFER SECTION BEING OF THE SINGLE-ENDED TYPE AND PRODUCING AN OUTPUT SIGNAL WHICH IS SUBSTANTIALLY AN AMPLIFIED FACSIMILE OF THE INPUT SIGNAL APPLIED THERETO AND INCLUDING TWO OUTPUT TERMINALS, AND A SECOND AMPLIFIER SECTION OF THE DIFFERENTIAL TYPE CONNECTED TO THE TWO OUTPUT TERMINALS OF SAID FIRST AMPLIFIER SECTION.
Claim 2
Dependent Claim
62 words
A DIFFERENTIAL AMPLIFIER INCLUDING A FIRST AMPLIFIER SECTION ISOLATED FROM GROUND, SAID FIRST AMPLIFER SECTION BEING OF THE SINGLE-ENDED TYPE AND PRODUCING AN OUTPUT SIGNAL WHICH IS SUBSTANTIALLY AN AMPLIFIED FACSIMILE OF THE INPUT SIGNAL APPLIED THERETO AND INCLUDING TWO OUTPUT TERMINALS, AND A SECOND AMPLIFIER SECTION OF THE DIFFERENTIAL TYPE CONNECTED TO THE TWO OUTPUT TERMINALS OF SAID FIRST AMPLIFIER SECTION.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |