US3333215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage-sensitive semiconductor circuit for providing improved sweep frequency linearity
Assignee: AT&T Inc
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Filing: 1964-11-03
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Granted: 1967-07-25
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Expires: 1984-11-03
Abstract
No abstract record available.
Inventors
- 👤 John O Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:16
CPC Classifications
H; H03; H03B; H03B23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A CIRCUIT FOR PROVIDING A FREQUENCY SWEEP OF IMPROVED LINEARITY IN RESPONSE TO AN INPUT LINEAR SWEEP VOLTAGE COMRPSING A RESONANT CIRCUIT HAVING IN A PARALLEL BRANCH THEREOF FIRST AND SECOND BACK-BIASED SEMICONDUCTOR DIODES EACH PRESENTING A CAPACITANCE WHICH IS DEPENDENT ON THE VALUE OF REVERSE BIAS VOLTAGE APPLIED TO IT, FIRST MEANS FOR APPLYING THE FULL RANGE OF THE LINEAR
Claim 2
Dependent Claim
61 words
A CIRCUIT FOR PROVIDING A FREQUENCY SWEEP OF IMPROVED LINEARITY IN RESPONSE TO AN INPUT LINEAR SWEEP VOLTAGE COMRPSING A RESONANT CIRCUIT HAVING IN A PARALLEL BRANCH THEREOF FIRST AND SECOND BACK-BIASED SEMICONDUCTOR DIODES EACH PRESENTING A CAPACITANCE WHICH IS DEPENDENT ON THE VALUE OF REVERSE BIAS VOLTAGE APPLIED TO IT, FIRST MEANS FOR APPLYING THE FULL RANGE OF THE LINEAR
References Cited (Backward Citations)
FR1319107A
Cited
US3219944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |