US2709888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable area nozzles for jet propulsion systems
Assignee: Power Jets Research and Development Ltd
•
Filing: 1951-03-19
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Granted: 1955-06-07
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Expires: 1971-03-19
Abstract
No abstract record available.
Inventors
- 👤 Holl Raymond
- 👤 Deacon William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:45
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB316601A
Cited
FR919004A
Cited
US2565854A
Cited
US2597253A
Cited
US2608053A
Cited
US2516909A
Cited
US2603062A
Cited
US2603060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-06 | 1958-12-06 | 1959-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-06 | 1962-12-06 | 1963-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-06 | 1966-12-06 | 1967-06-07 | $7700.00 | Window Closed / Lapsed |