Patent US2786646A successfully refreshed from Google Patents.
US2786646A
Expired / Lapsed
US
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Bladed rotors for axial flow turbines and similarly bladed fluid flow machines
Assignee: Power Jets Research and Development Ltd
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Filing: 1950-07-10
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Granted: 1957-03-26
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Expires: 1970-07-10
Abstract
No abstract record available.
Inventors
- 👤 Grantham Cyril
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:15
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB141017A
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US1516607A
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GB235304A
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US2149510A
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GB576218A
Cited
US2347034A
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US2405190A
Cited
GB614547A
Cited
US2501038A
Cited
US2553078A
Cited
US2618462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |