US2796731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable area jet propulsion nozzle
Assignee: Rolls Royce PLC
•
Filing: 1953-12-10
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Granted: 1957-06-25
•
Expires: 1973-12-10
Abstract
No abstract record available.
Inventors
- 👤 Morley Frederick Willia Walton
- 👤 Rubbra Arthur Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:07
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06; F02K1/12; F02K1/123; F02K1/1207
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2597253A
Cited
US2496509A
Cited
US2699645A
Cited
US2634578A
Cited
US2722801A
Cited
US2603062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |