US2489327A
Expired / Lapsed
US
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Crystal controlled oscillator
Assignee: STC PLC
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Filing: 1945-09-14
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Granted: 1949-11-29
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Expires: 1965-09-14
Abstract
No abstract record available.
Inventors
- 👤 George T Royden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:37
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/16; H03C1/18; H03C1/24; F; F16; F16L; F16L27/00; F16L27/08; F16L27/0804; F16L27/0808; F16L27/0824; F16L27/0828; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/34; H03C3/00; H03C3/02; H03C3/09; H03C3/10; H03C3/12; H03C3/14; H03C3/16; H03C3/38; H03C3/40
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) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |