US3341655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized preamplifier for television cameras
Assignee: RCA Corp
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Filing: 1964-03-23
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Granted: 1967-09-12
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Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 Benjamin S Vilkomerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:33
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/40
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
IN COMBINATION WITH VIDEO SIGNAL-PRODUCING PHOTOCONDUCTIVE IMAGE PICKUP TUBE, AN AMPLIFIER COMPRISING: A SIGNAL INPUT TRANSISTOR, A SIGNAL TAKEOFF TRANSISTOR AND A FEEDBACK TRANSITOR, EACH TRANSISTOR HAVING BASE, EMITTER AND COLLECTOR ELECTRODES; MEANS CONNECTING THE COLLECTOR AND EMITTER ELECTRODES OF SAID RESPECTIVE TRANSISTORS TO A SOURCE OF POTENTIAL; MEANS COUPLING IN SIGNAL-RECEIVING MANNER THE BASE OF SAID INPUT TRANSISTOR TO SAID PICKUP TUBE, THE BASE OF SAID TAKEOFF TRANSISTOR TO THE EMITTER OF SAID INPUT TRANSISTOR, AND THE BASE OF SAID FEEDBACK TRANSISTOR TO THE EMITTER OF SAID TAKEOFF TRANSISTOR; AND MEANS CAPACITIVELY COUPLING THE EMITTER OF SAID FEEDBACK TRANSISTOR TO THE COLLECTOR OF SAID INPUT TRANSISTOR.
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) | 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 |