US3249876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision tracking of electrically tuned circuits
Assignee: General Dynamics Corp
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Filing: 1963-02-07
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Granted: 1966-05-03
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Expires: 1983-02-07
Abstract
No abstract record available.
Inventors
- 👤 John E Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:51
CPC Classifications
H; H03; H03J; H03J7/00; H03J3/00; H03J3/02; H03J3/16; H03J3/18; H03J3/185; H03J7/02; H03J7/04; H03J7/06; H03J7/065; H03J7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A SYSTEM FOR TUNING A RESONANT CIRCUIT COMPRISING A FIRST VOLTAGE RESPONSIVE REACTANCE ELEMENT IN SAID RESONANT CIRCUIT, A VARIABLE FREQUENCY OSCILLATOR, SAID OSCILLATOR INCLUDING A TUNABLE RESONANT FREQUENCY DETERMINING CIRCUIT OPERABLE TO SELECT THE FREQUENCY OF SAID OSCILLATOR, A SECOND VOLTAGE RESPONSIVE REACTANCE ELEMENT IN SAID FREQUENCE DETERMINING CIRCUIT, A DISCRIMINATOR COUPLE TO SAID OSCILLATOR FOR GENERATING A CONTROL VOLTAGE THE AMPLITUDE OF WHICH IS A FUNCTION OF THE OSCILLATOR FREQUENCY, AND MEANS FOR APPLYING SAID CONTROL VOLTAGE TO BOTH OF
Claim 2
Independent Claim
82 words
A SYSTEM FOR TUNING A RESONANT CIRCUIT COMPRISING A FIRST VOLTAGE RESPONSIVE REACTANCE ELEMENT IN SAID RESONANT CIRCUIT, A VARIABLE FREQUENCY OSCILLATOR, SAID OSCILLATOR INCLUDING A TUNABLE RESONANT FREQUENCY DETERMINING CIRCUIT OPERABLE TO SELECT THE FREQUENCY OF SAID OSCILLATOR, A SECOND VOLTAGE RESPONSIVE REACTANCE ELEMENT IN SAID FREQUENCE DETERMINING CIRCUIT, A DISCRIMINATOR COUPLE TO SAID OSCILLATOR FOR GENERATING A CONTROL VOLTAGE THE AMPLITUDE OF WHICH IS A FUNCTION OF THE OSCILLATOR FREQUENCY, AND MEANS FOR APPLYING SAID CONTROL VOLTAGE TO BOTH OF
References Cited (Backward Citations)
US2958768A
Cited
US3029339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |