Patent US2547159A successfully refreshed from Google Patents.
US2547159A
Expired / Lapsed
US
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Device for stabilizing the frequency of an ultra short wave transmitter
Assignee: Thales SA
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Filing: 1946-08-27
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Granted: 1951-04-03
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Expires: 1966-08-27
Abstract
No abstract record available.
Inventors
- 👤 Guenard Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:27
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/02; H03L7/04
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) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |