US3373368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide band transistor isolation amplifier
Assignee: Solid State Systems Inc
•
Filing: 1962-09-24
•
Granted: 1968-03-12
•
Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Stanley J Gewirtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:03
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A WIDE BAND TRANSISTOR AMPLIFIER INCLUDING FIRST AND SECOND AMPLIFICATION STAGES, MEANS FOR CREATING A BUCKING AC VOLTAGE AT THE EMITTER OF SAID FIRST STAGE FOR CAUSING THE LOAD IMPEDANCE OF SAID FIRST STAGE TO APPEAR AS A VERY HIGH AC IMPEDANCE, SAID MEANS COMPRISING A TAPPED RESISTOR DIVIDER CONNECTED BETWEEN THE EMITTER OF SAID SECOND STAGE AND GROUND, SAID TAP BEING CONNECTED TO THE EMITTER OF SAID FIRST STAGE TO PRESENT SAID BUCKING AC VOLTAGE THERETO, SAID SECOND TRANSISTOR RECEIVING ITS BASE INPUT AC SIGNAL FROM THE EMITTER OF SAID FIRST TRANSISTOR.
Claim 2
Dependent Claim
93 words
A WIDE BAND TRANSISTOR AMPLIFIER INCLUDING FIRST AND SECOND AMPLIFICATION STAGES, MEANS FOR CREATING A BUCKING AC VOLTAGE AT THE EMITTER OF SAID FIRST STAGE FOR CAUSING THE LOAD IMPEDANCE OF SAID FIRST STAGE TO APPEAR AS A VERY HIGH AC IMPEDANCE, SAID MEANS COMPRISING A TAPPED RESISTOR DIVIDER CONNECTED BETWEEN THE EMITTER OF SAID SECOND STAGE AND GROUND, SAID TAP BEING CONNECTED TO THE EMITTER OF SAID FIRST STAGE TO PRESENT SAID BUCKING AC VOLTAGE THERETO, SAID SECOND TRANSISTOR RECEIVING ITS BASE INPUT AC SIGNAL FROM THE EMITTER OF SAID FIRST TRANSISTOR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |