Patent US2451858A successfully refreshed from Google Patents.
US2451858A
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Controlled frequency oscillator
Assignee: General Electric Co
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Filing: 1945-01-26
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Granted: 1948-10-19
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Expires: 1965-01-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond P Mork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:16
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/20; H03B5/26; H03B5/28; H03B23/00; H03C; H03C3/00; H03C3/10; H03C3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2031224A
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US2209955A
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GB489849A
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US2163403A
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US2186571A
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US2173427A
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US2236690A
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US2165517A
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US2268872A
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US2236985A
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US2324408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |