US2943447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine acceleration fuel control responsive to speed scheduled compressor pressure ratio
Assignee: Rolls Royce PLC
•
Filing: 1953-06-08
•
Granted: 1960-07-05
•
Expires: 1973-06-08
Abstract
No abstract record available.
Inventors
- 👤 Davies David Omri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:14
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/32; F02C9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2618222A
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US2613029A
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US2643514A
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US2645240A
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US2657529A
Cited
US2746242A
Cited
US2714803A
Cited
US2741089A
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US2857739A
Cited
US2642718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |