Patent US2674847A successfully refreshed from Google Patents.
US2674847A
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Control means in fuel system of gas-turbine engines
Assignee: Rolls Royce PLC
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Filing: 1949-04-15
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Granted: 1954-04-13
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Expires: 1969-04-15
Abstract
No abstract record available.
Inventors
- 👤 Davies Kenneth Roy
- 👤 Herbstritt Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:51
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; F23N; F23N1/00; F23N1/007; F23N2241/00; F23N2241/20; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7788
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2223381A
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US2374844A
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US2440567A
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US2422808A
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US2440566A
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GB604466A
Cited
US2581275A
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US2407115A
Cited
US2581276A
Cited
GB634095A
Cited
US2479813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |