Patent US2847185A successfully refreshed from Google Patents.
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
•
Granted: 1958-08-12
•
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
2026-10-27 13:27
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA491903A
Cited
FR897709A
Cited
US2447095A
Cited
US2533078A
Cited
US2556736A
Cited
GB602530A
Cited
US2514105A
Cited
US2779565A
Cited
US2647368A
Cited
US2648520A
Cited
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 |