Patent US2715763A successfully refreshed from Google Patents.
Patent DE475711C successfully refreshed from Google Patents.
US2575879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-area nozzle for downstream end of jet pipe in jet propulsion units
Assignee: Rolls Royce PLC
•
Filing: 1946-08-28
•
Granted: 1951-11-20
•
Expires: 1966-08-28
Abstract
No abstract record available.
Inventors
- 👤 Lombard Adrian Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:40
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06; F02K1/15
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1856024A
Cited
US2095991A
Cited
US2219994A
Cited
GB523468A
Cited
US2332212A
Cited
US2404428A
Cited
US2457595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |