Patent US3251008A successfully refreshed from Google Patents.
US3251008A
Expired / Lapsed
US
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Voltage sensitive capacitor-tuned oscillator with automatic frequency control
Assignee: Individual
•
Filing: 1964-03-09
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Granted: 1966-05-10
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Expires: 1984-03-09
Abstract
No abstract record available.
Inventors
- 👤 Schweitzer Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:57
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/02; H03J7/04; H03J7/08; H03J7/10; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1203; H03B5/1231; H03B5/1237; H03B5/124; H03B5/1243; H03B5/1256; H03B2200/00; H03B2200/003; H03B2200/004; H03B2201/00; H03B2201/02; H03B2201/0208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
AUTOMATIC FREQUENCY CONTROLLED APPARATUS COMPRISING, AN OSCILLATOR CIRCUIT, A SEMICONDUCTOR DIODE CONNECTED TO SAID CIRCUIT TO VARY THE FREQUENCY OF THE OSCILLATIONS THEREOF IN ACCORDANCE WITH A CONTROL VOLTAGE APPLIED TO SAID DIODE, SAID DIODE BEING CONNECTED SO AS TO HAVE NO APPRECIABLE DIRECT CURRENT BIAS WHEN SAID CONTROL VOLTAGE IS ZERO, AND A VOLTAGE SOURCE OF VARIABLE AMPLITUDE AND POLARITY CONNECTED IN A DIRECT CURRENT CIRCUIT WITH DIODE AND RESPONSIVE TO THE FREQUENCY OF
Claim 2
Dependent Claim
75 words
AUTOMATIC FREQUENCY CONTROLLED APPARATUS COMPRISING, AN OSCILLATOR CIRCUIT, A SEMICONDUCTOR DIODE CONNECTED TO SAID CIRCUIT TO VARY THE FREQUENCY OF THE OSCILLATIONS THEREOF IN ACCORDANCE WITH A CONTROL VOLTAGE APPLIED TO SAID DIODE, SAID DIODE BEING CONNECTED SO AS TO HAVE NO APPRECIABLE DIRECT CURRENT BIAS WHEN SAID CONTROL VOLTAGE IS ZERO, AND A VOLTAGE SOURCE OF VARIABLE AMPLITUDE AND POLARITY CONNECTED IN A DIRECT CURRENT CIRCUIT WITH DIODE AND RESPONSIVE TO THE FREQUENCY OF
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |