Patent US2660413A successfully refreshed from Google Patents.
US2660413A
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Locking arrangement for blading of axial-flow turbines and compressors
Assignee: Rolls Royce PLC
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Filing: 1951-01-29
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Granted: 1953-11-24
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Expires: 1971-01-29
Abstract
No abstract record available.
Inventors
- 👤 Haworth Lionel
- 👤 Petrie James Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:42
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30; F01D5/32; F01D5/326; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/974; Y10S411/991; Y10S411/992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |