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US3560858A
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Automatic tuning type receiver with frequency holding circuit
Assignee: Panasonic Holdings Corp
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Filing: 1968-07-05
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Granted: 1971-02-02
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Expires: 1988-07-05
Abstract
Abstract AN AUTOMATIC TUNING TYPE RECEIVER USING VARIABLE REACTANCE ELEMENTS OF WHICH THE REACTANCE VALUE IS ELECTRONICALLY VARIED IN ACCORDANCE WITH A VOLTAGE OR CURRENT SUPPLIED THERETO, THEREBY MAKING IT POSSIBLE TO POSITIVELY EFFECT THE FREQUENCY SWEEP AND SUSTAIN THE TUNED STATE.
Inventors
- 👤 Yasuhide Sakai
- 👤 Yoshinori Takagi
- 👤 Masahiro Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:08
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/20; H03J7/24; H03J7/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |