Patent US2807433A successfully refreshed from Google Patents.
US2807433A
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US
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Stationary blade rings of axial flow turbines or compressors
Assignee: Bristol Siddeley Engines Ltd
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Filing: 1953-12-11
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Granted: 1957-09-24
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Expires: 1973-12-11
Abstract
No abstract record available.
Inventors
- 👤 Halford Frank Bernard
- 👤 Clarke George Frederick
- 👤 Barratt Alexander Willi Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:05
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/16; F01D25/162; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/187; F01D5/188; F01D9/00; F01D9/02; F01D9/04; F01D9/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2622843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |