Patent US2750147A successfully refreshed from Google Patents.
US2750147A
Expired / Lapsed
US
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Blading for turbines and like machines
Assignee: Power Jets Research and Development Ltd
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Filing: 1948-10-05
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Granted: 1956-06-12
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Expires: 1968-10-05
Abstract
No abstract record available.
Inventors
- 👤 Smith Austin Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:22
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190122028A
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US1893330A
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US2183527A
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GB509105A
Cited
US2220420A
Cited
US2236426A
Cited
US2297446A
Cited
US2337619A
Cited
US2401826A
Cited
GB584580A
Cited
US2520373A
Cited
GB602530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |