US2641422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust system for gas turbine engines in aircraft
Assignee: Rolls Royce PLC
•
Filing: 1949-03-08
•
Granted: 1953-06-09
•
Expires: 1969-03-08
Abstract
No abstract record available.
Inventors
- 👤 Oulianoff George
- 👤 Davis Christopher Ainsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:42
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/52; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR403730A
Cited
US1708803A
Cited
US2280835A
Cited
US2103466A
Cited
GB578837A
Cited
US2420323A
Cited
GB580995A
Cited
US2441488A
Cited
GB585557A
Cited
US2488174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |