US2810258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel control means responsive to rate of change of by-pass duct pressure in by-pass gas turbine engines
Assignee: Rolls Royce PLC
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Filing: 1953-06-11
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Granted: 1957-10-22
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Expires: 1973-06-11
Abstract
No abstract record available.
Inventors
- 👤 Cook Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:50
CPC Classifications
F; F02; F02K; F02K3/00; F02K3/02; Y; Y02; Y02T; Y02T50/00; Y02T50/60
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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |