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US2989845A
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Converging-diverging nozzle construction
Assignee: Curtiss Wright Corp
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Filing: 1957-12-02
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Granted: 1961-06-27
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Expires: 1977-12-02
Abstract
No abstract record available.
Inventors
- 👤 Werner E Howald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:56
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06; F02K1/12; F02K1/1223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2669834A
Cited
US2697907A
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US2699648A
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US2831319A
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US2822199A
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US2780056A
Cited
US2926489A
Cited
US2870600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |