Patent US3393379A successfully refreshed from Google Patents.
US3393379A
Expired / Lapsed
US
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Frequency control circuit utilizing switching means
Assignee: RCA Corp
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Filing: 1966-11-30
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Granted: 1968-07-16
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Expires: 1986-11-30
Abstract
No abstract record available.
Inventors
- 👤 Robert F Sanford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:39
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/02; H03C3/08; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1203; H03B5/1231; H03B5/1237; H03B5/1262; H03B5/1268; H03B5/1296
Claims Analysis
Total Claims: 0
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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) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |