Patent US5784392A successfully refreshed from Google Patents.
Patent US3138756A successfully refreshed from Google Patents.
US3138756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor reflex amplifier with direct current amplification
Assignee: Admiral Corp
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Filing: 1960-10-31
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Granted: 1964-06-23
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Expires: 1980-10-31
Abstract
No abstract record available.
Inventors
- 👤 Tarantur Sam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:20
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A SIGNAL TRANSLATION SYSTEM COMPRISING; MEANS INCLUDING AN ELECTRONIC VALVE FOR AMPLIFYING A FIRST SIGNAL HAVING A CARRIER FREQUENCY WAVE COMPONENT AND AN AUDIO FREQUENCY MODULATION COMPONENT; MEANS COUPLED TO SAID VALVE FOR DEVELOPING A SECOND SIGNAL BY DETECTION OF SAID FIRST SIGNAL AFTER AMPLIFICATION OF SAID FIRST SIGNAL BY SAID VALVE, SAID SECOND SIGNAL COMPRISING SAID AUDIO FREQUENCY COMPONENT AND A DIRECT CURRENT PORTION REPRESENTATIVE OF THE LEVEL OF SAID CARRIER WAVE COMPONENT; A DIRECT CURRENT FEEDBACK CIRCUIT FOR FEEDING BACK SAID SECOND SIGNAL TO SAID VALVE FOR AMPLIFICATION THEREBY; MEANS IN THE OUTPUT OF SAID VALVE RESPONSIVE ONLY TO THE AUDIO FREQUENCY COMPONENT OF SAID SECOND SIGNAL; AND MEANS IN THE OUTPUT OF SAID VALVE RESPONSIVE ONLY TO SAID DIRECT CURRENT PORTION OF SAID SECOND SIGNAL.
Claim 2
Dependent Claim
128 words
A SIGNAL TRANSLATION SYSTEM COMPRISING; MEANS INCLUDING AN ELECTRONIC VALVE FOR AMPLIFYING A FIRST SIGNAL HAVING A CARRIER FREQUENCY WAVE COMPONENT AND AN AUDIO FREQUENCY MODULATION COMPONENT; MEANS COUPLED TO SAID VALVE FOR DEVELOPING A SECOND SIGNAL BY DETECTION OF SAID FIRST SIGNAL AFTER AMPLIFICATION OF SAID FIRST SIGNAL BY SAID VALVE, SAID SECOND SIGNAL COMPRISING SAID AUDIO FREQUENCY COMPONENT AND A DIRECT CURRENT PORTION REPRESENTATIVE OF THE LEVEL OF SAID CARRIER WAVE COMPONENT; A DIRECT CURRENT FEEDBACK CIRCUIT FOR FEEDING BACK SAID SECOND SIGNAL TO SAID VALVE FOR AMPLIFICATION THEREBY; MEANS IN THE OUTPUT OF SAID VALVE RESPONSIVE ONLY TO THE AUDIO FREQUENCY COMPONENT OF SAID SECOND SIGNAL; AND MEANS IN THE OUTPUT OF SAID VALVE RESPONSIVE ONLY TO SAID DIRECT CURRENT PORTION OF SAID SECOND SIGNAL.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |