US2791882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable area nozzle for jet propulsion engine
Assignee: Westinghouse Electric Corp
•
Filing: 1950-09-29
•
Granted: 1957-05-14
•
Expires: 1970-09-29
Abstract
No abstract record available.
Inventors
- 👤 Robert G Willard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:27
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06; F02K1/12; F02K1/1261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US851603A
Cited
US2382016A
Cited
US2523842A
Cited
US2514248A
Cited
US2597253A
Cited
GB617173A
Cited
US2509238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |