Patent US3258704A successfully refreshed from Google Patents.
US3258704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal si
Assignee: —
•
Filing: —
•
Granted: 1966-06-28
•
Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:40
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/21; H03F3/217; H03F3/2173
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
AN A.-C. AMPLIFIER HAVING AN AMPLITUDE-STABLE A.-C. OUTPUT SIGNAL OF A SIGNAL FREQUENCY BAND IRRESPECTIVE OF CHANGES IN THE AMPLITUDE OF THE A.-C. INPUT SIGNAL, WHICH COMPRISES: (A) A FIRST TRANSISTOR HAVING A BASE OF N-TYPE CONDUCTIVITY TYPE AND AN EMITTER AND COLLECTRO OF P CONDUCTIVITY TYPE; (B) A SECOND TRANSISTOR HAVING AN AMITTER AND COLLECTOR OF N CONDUCTIVITY TYPE AND A BASE OF P CONDUCTIVITY TYPE; (C) A MEANS CONNECTING THE COLLECTORS OF SAID TWO TRANSISTORS TOGETHER; (D) A MEANS FOR PASSING TWO IN-PHASE INPUT SIGNALS TO THE RESPECTIVE BASE OF SAID TRANSISTORS; (E) A D.-C. VOLTAGE SUPPLY MEANS HAVIONG A POSITIVE AND A NEGATIVE TERMINAL; (F) A FIRST DIODE COUPLING THE POSITIVE TERMINAL OF SAID D.-C. VOLTAGE SUPPLY MEANS IN SERIES WITH THE PTYPE EMITTER OF ONE OF SAID TRANSISTORS, THE CATHODE OF SAID DIODE BEING CONNECTED TO SAID EMITTER; (G) A SECOND DIODE COUPLING THE NEGATIVE TERMINAL OF SAID D.-C. VOLTAGE SUPPLY MEANS IN SERIES WITH THE N-TYPE EMITTER OF THE OTHER OF SAID TRANSISTORS, THE ANODE OF SAID DIODE BEING CONNECTED TO SAID EMITTER; AND (H) A BANDPASS FILTER ADAPTED TO PASS ONLY SAID SINGLE FREQUENCY BAND COUPLING THE CONNECTED COLLECTORS OF SAID TRANSISTORS IN SERIES WITH A LOAD TO BE DRIVEN BY SAID AMPLIFIER.
Claim 2
Dependent Claim
209 words
AN A.-C. AMPLIFIER HAVING AN AMPLITUDE-STABLE A.-C. OUTPUT SIGNAL OF A SIGNAL FREQUENCY BAND IRRESPECTIVE OF CHANGES IN THE AMPLITUDE OF THE A.-C. INPUT SIGNAL, WHICH COMPRISES: (A) A FIRST TRANSISTOR HAVING A BASE OF N-TYPE CONDUCTIVITY TYPE AND AN EMITTER AND COLLECTRO OF P CONDUCTIVITY TYPE; (B) A SECOND TRANSISTOR HAVING AN AMITTER AND COLLECTOR OF N CONDUCTIVITY TYPE AND A BASE OF P CONDUCTIVITY TYPE; (C) A MEANS CONNECTING THE COLLECTORS OF SAID TWO TRANSISTORS TOGETHER; (D) A MEANS FOR PASSING TWO IN-PHASE INPUT SIGNALS TO THE RESPECTIVE BASE OF SAID TRANSISTORS; (E) A D.-C. VOLTAGE SUPPLY MEANS HAVIONG A POSITIVE AND A NEGATIVE TERMINAL; (F) A FIRST DIODE COUPLING THE POSITIVE TERMINAL OF SAID D.-C. VOLTAGE SUPPLY MEANS IN SERIES WITH THE PTYPE EMITTER OF ONE OF SAID TRANSISTORS, THE CATHODE OF SAID DIODE BEING CONNECTED TO SAID EMITTER; (G) A SECOND DIODE COUPLING THE NEGATIVE TERMINAL OF SAID D.-C. VOLTAGE SUPPLY MEANS IN SERIES WITH THE N-TYPE EMITTER OF THE OTHER OF SAID TRANSISTORS, THE ANODE OF SAID DIODE BEING CONNECTED TO SAID EMITTER; AND (H) A BANDPASS FILTER ADAPTED TO PASS ONLY SAID SINGLE FREQUENCY BAND COUPLING THE CONNECTED COLLECTORS OF SAID TRANSISTORS IN SERIES WITH A LOAD TO BE DRIVEN BY SAID AMPLIFIER.
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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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |