US2802334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engines
Assignee: Rolls Royce PLC
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Filing: 1953-01-13
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Granted: 1957-08-13
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Expires: 1973-01-13
Abstract
No abstract record available.
Inventors
- 👤 Fletcher Arthur Holmes
- 👤 Corbitt Robert William
- 👤 Knowles Joyce Winifred
- 👤 Grimsdick Thomas Roskelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:50
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/36
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |