Patent US2666902A successfully refreshed from Google Patents.
US2666902A
Expired / Lapsed
US
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Frequency modulator transistor circuits
Assignee: RCA Corp
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Filing: 1950-06-30
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Granted: 1954-01-19
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Expires: 1970-06-30
Abstract
No abstract record available.
Inventors
- 👤 Leslie L Koros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:06
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/24; H03C3/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2033231A
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US2000584A
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US2279659A
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US2486776A
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US2585078A
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US2533001A
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US2570938A
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US2570939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |