US2799989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable area jet nozzle
Assignee: Individual
•
Filing: 1954-09-24
•
Granted: 1957-07-23
•
Expires: 1974-09-24
Abstract
No abstract record available.
Inventors
- 👤 Peter G Kappus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:03
CPC Classifications
B; B64; B64C; B64C9/00; B64C9/38; Y; Y02; Y02T; Y02T50/00; Y02T50/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US340237A
Cited
US1698822A
Cited
US2420323A
Cited
GB580995A
Cited
US2569996A
Cited
US2481330A
Cited
US2488174A
Cited
US2603062A
Cited
US2625008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |