Patent US2531896A successfully refreshed from Google Patents.
US2531896A
Expired / Lapsed
US
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Variable area nozzle
Assignee: Individual
•
Filing: 1946-10-12
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Granted: 1950-11-28
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Expires: 1966-10-12
Abstract
No abstract record available.
Inventors
- 👤 Louis E Telbizoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:43
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US352732A
Cited
US525002A
Cited
US589422A
Cited
US589466A
Cited
GB189720536A
Cited
US1095767A
Cited
US1556328A
Cited
US1852918A
Cited
US2424654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |