US2815643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable area nozzle
Assignee: RTX Corp
•
Filing: 1951-06-29
•
Granted: 1957-12-10
•
Expires: 1971-06-29
Abstract
No abstract record available.
Inventors
- 👤 Frederick L Geary
- 👤 Jr William Granville Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:21
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06; F02K1/12; F02K1/1207; Y; Y10; Y10S; Y10S56/00; Y10S56/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2563270A
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US2565854A
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GB607686A
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US2523842A
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US2597253A
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US2488174A
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US2608820A
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US2569497A
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US2693078A
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US2639578A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |