US3559086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bipolar voltage amplifier
Assignee: AT&T Inc
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Filing: 1969-03-26
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Granted: 1971-01-26
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Expires: 1989-03-26
Abstract
Abstract A BIPOLAR VOLTAGE AMPLIFIER HAVING A RELATIVELY HIGH OUTPUT VOLTAGE AND A RELATIVELY HIGH SLEWING RATE. INPUT SIGNALS ARE APPLIED TO THE EMITTERS OF A PAIR OF SERIALLYCONNECTED COMPLEMENTARY TRANSISTORS IN COMMON-EMITTER CONFIGURATION. THE AMPLIFIED SIGNALS DEVELOPED ACROSS THE COLLECTORS OF THE FIRST PAIR OF TRANSISTORS ARE FED TO THE EMITTERS OF A SECOND PAIR OF COMPLEMENTARY TRANSISTORS CONNECTED IN PUSH-PULL, COMMON-BASE CONFIGURATION.
Inventors
- 👤 Charles Clifford Wyckoff Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:56
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/34; H03F3/343; H03F3/347; H03F3/30; H03F3/3066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |