Patent US2825203A successfully refreshed from Google Patents.
US2825203A
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US
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Aerodynamic valves
Assignee: Safran Aircraft Engines SAS
•
Filing: 1952-06-24
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Granted: 1958-03-04
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Expires: 1972-06-24
Abstract
No abstract record available.
Inventors
- 👤 Jean H Bertin
- 👤 Alexandre A R G Mihail
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:20
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/02; F02K7/06; F02K7/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1448151A
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US1503371A
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US1515408A
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US1852164A
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US2347903A
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US2639580A
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US2523308A
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US2633703A
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US2551112A
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US2618925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |