Patent US3424227A successfully refreshed from Google Patents.
Patent US2509280A successfully refreshed from Google Patents.
US2509280A
Expired / Lapsed
US
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Cathode-driven oscillator
Assignee: RCA Corp
•
Filing: 1944-12-29
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Granted: 1950-05-30
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Expires: 1964-12-29
Abstract
No abstract record available.
Inventors
- 👤 George C Sziklai
- 👤 Alfred C Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:08
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/14; H03L; H03L5/00; H03L7/00; H03L7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2066528A
Cited
US2233778A
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US2269417A
Cited
US2416304A
Cited
US2388098A
Cited
US2405876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-29 | 1953-11-28 | 1954-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-29 | 1957-11-28 | 1958-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-29 | 1961-11-28 | 1962-05-30 | $7700.00 | Window Closed / Lapsed |