US2847185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow blading with means to supply fluid thereinto for turbines or compressors
Assignee: Rolls Royce PLC
•
Filing: 1954-03-29
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Granted: 1958-08-12
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Expires: 1974-03-29
Abstract
No abstract record available.
Inventors
- 👤 Petrie James Alexander
- 👤 Robey Charles William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:22
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/04; F01D9/042; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/187; F01D5/188; F01D5/189; F01D9/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA491903A
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FR897709A
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US2447095A
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US2533078A
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US2556736A
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GB602530A
Cited
US2514105A
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US2779565A
Cited
US2647368A
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US2648520A
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US2568726A
Cited
FR1007303A
Cited
GB666536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |