US3290618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency modulated transistor oscillator
Assignee: Siemens and Halske AG
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Filing: 1963-09-25
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Granted: 1966-12-06
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Expires: 1983-09-25
Abstract
No abstract record available.
Inventors
- 👤 Leysieffer Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:34
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/22; H03C3/222; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1203; H03B5/1231; H03B5/1237; H03B5/124; H03B5/1243; H03B2200/00; H03B2200/006; H03B2200/0086; H03C2200/00; H03C2200/0037; H03C2200/0079
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
AN OSCILLATOR HAVING A FREQUENCY-DETERMINING RESONANT CIRCUIT AND A FEEDBACK COUPLING PATH WHICH CAN BE MIDULATED IN FREQUENCY BY A MODULATING VOLTAGE COMPRISING, CAPACITOR MEANS DISPOSED IN THE FREQUENCY-DETERMINING RESONANT CIRCUIT OF THE OSCILLATION WHICH IS CONNECTED TO AND VARIABLE IN SYNCHRONISM WITH THE MODULATING VOLTAGE AND HAS A CAPACITANCE CHARACTERISTIC CORRESPONDING TO VARACTOR DIODES, A RESISTOR, A SERIES RESONANT CIRCUIT, MEANS INCLUDING SAID SERIES RESONANT CIRCUIT FOR CONNECTING SAID RESISTOR TO SAID FREQUENCY-DETERMINING RESONANT CIRCUIT EXTERNALLY OF SAID FEEDBACK COUPLING PATH OF THE OSCILLATION, THE TUNING OF SAID SERIES RESONANT CIRCUIT ABOVE THE HIGHEST
Claim 2
Dependent Claim
95 words
AN OSCILLATOR HAVING A FREQUENCY-DETERMINING RESONANT CIRCUIT AND A FEEDBACK COUPLING PATH WHICH CAN BE MIDULATED IN FREQUENCY BY A MODULATING VOLTAGE COMPRISING, CAPACITOR MEANS DISPOSED IN THE FREQUENCY-DETERMINING RESONANT CIRCUIT OF THE OSCILLATION WHICH IS CONNECTED TO AND VARIABLE IN SYNCHRONISM WITH THE MODULATING VOLTAGE AND HAS A CAPACITANCE CHARACTERISTIC CORRESPONDING TO VARACTOR DIODES, A RESISTOR, A SERIES RESONANT CIRCUIT, MEANS INCLUDING SAID SERIES RESONANT CIRCUIT FOR CONNECTING SAID RESISTOR TO SAID FREQUENCY-DETERMINING RESONANT CIRCUIT EXTERNALLY OF SAID FEEDBACK COUPLING PATH OF THE OSCILLATION, THE TUNING OF SAID SERIES RESONANT CIRCUIT ABOVE THE HIGHEST
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |