US2638743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction of turbine-inlet and stator elements of gas turbines
Assignee: Ruston and Hornsby Ltd
•
Filing: 1950-04-26
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Granted: 1953-05-19
•
Expires: 1970-04-26
Abstract
No abstract record available.
Inventors
- 👤 Feilden Geoffrey Bertra Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:38
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/24; F01D25/246; F01D9/00; F01D9/02; F01D9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2241782A
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US2445661A
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US2414788A
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US2417486A
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US2472062A
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US2427244A
Cited
US2584899A
Cited
GB609682A
Cited
US2591399A
Cited
US2599470A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |