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US2848190A
Expired / Lapsed
US
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Radial flow turbo-machines
Assignee: Power Jets Research and Development Ltd
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Filing: 1953-09-28
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Granted: 1958-08-19
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Expires: 1973-09-28
Abstract
No abstract record available.
Inventors
- 👤 Barr John Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:48
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/04; F01D5/043; F01D5/048; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1563465A
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US1535417A
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US1877347A
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US1803223A
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US1718061A
Cited
GB307832A
Cited
US1868146A
Cited
US2633776A
Cited
FR976790A
Cited
GB662517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |