Patent US2843354A successfully refreshed from Google Patents.
US2843354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine and like blades
Assignee: Power Jets Research and Development Ltd
•
Filing: 1950-06-30
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Granted: 1958-07-15
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Expires: 1970-06-30
Abstract
No abstract record available.
Inventors
- 👤 Austin G Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:31
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/187; F01D5/188; F05; F05D; F05D2250/00; F05D2250/20; F05D2250/25; F05D2260/00; F05D2260/20; F05D2260/221; F05D2260/2212
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1928504A
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US2043644A
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GB426885A
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CH213483A
Cited
US2297446A
Cited
US2407531A
Cited
US2520373A
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GB625693A
Cited
US2581252A
Cited
US2665881A
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US2568726A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |