Patent US2644199A successfully refreshed from Google Patents.
Patent US3227968A successfully refreshed from Google Patents.
US3227968A
Expired / Lapsed
US
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Frequency modulated crystal controlled oscillator
Assignee: Bendix Corp
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Filing: 1962-01-09
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Granted: 1966-01-04
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Expires: 1982-01-09
Abstract
No abstract record available.
Inventors
- 👤 Richard W Brounley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:37
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/22; H03C3/222
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A FREQUENCY MODULATED CRYSTAL CONTROLLED OSCILLATOR CIRCUIT INCLUDING IN COMBINATION: A RESONANT CIRCUIT; A TRANSISTOR INCLUDING A CONTROL ELECTRODE; A SOURCE OF DIRECT CURRENT POWER AND MEANS CONNECTING SAID SOURCE TO SAID TRANSISTOR; MEANS CONNECTING SAID CONTROL ELECTRODE WITH SAID RESONANT CIRCUIT, SAID MEANS INCLUDING A PIEZOELECTRIC CRYSTAL AND A VOLTAGE VARIABLE SEMICONDUCTOR CAPACITOR CONNECTED IN SERIES; MEANS HAVING CONNECTIONS WITH SAID POWER SOURCE FOR BIASING SAID SEMICONDUCTOR CAPACITOR; AND INPUT TERMINALS FOR RECEIVING A MODULATING INPUT SIGNAL EFFECTIVELY CONNECTED ACROSS SAID SEMICONDUCTOR CAPACITOR.
Claim 2
Dependent Claim
84 words
A FREQUENCY MODULATED CRYSTAL CONTROLLED OSCILLATOR CIRCUIT INCLUDING IN COMBINATION: A RESONANT CIRCUIT; A TRANSISTOR INCLUDING A CONTROL ELECTRODE; A SOURCE OF DIRECT CURRENT POWER AND MEANS CONNECTING SAID SOURCE TO SAID TRANSISTOR; MEANS CONNECTING SAID CONTROL ELECTRODE WITH SAID RESONANT CIRCUIT, SAID MEANS INCLUDING A PIEZOELECTRIC CRYSTAL AND A VOLTAGE VARIABLE SEMICONDUCTOR CAPACITOR CONNECTED IN SERIES; MEANS HAVING CONNECTIONS WITH SAID POWER SOURCE FOR BIASING SAID SEMICONDUCTOR CAPACITOR; AND INPUT TERMINALS FOR RECEIVING A MODULATING INPUT SIGNAL EFFECTIVELY CONNECTED ACROSS SAID SEMICONDUCTOR CAPACITOR.
References Cited (Backward Citations)
US2925561A
Cited
US3046496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |