US2770944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable area reaction nozzle movable from convergent to convergent-di-vergent form
Assignee: RTX Corp
•
Filing: 1952-04-26
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Granted: 1956-11-20
•
Expires: 1972-04-26
Abstract
No abstract record available.
Inventors
- 👤 Donald J Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:03
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06; F02K1/12; F02K1/1207; F05; F05D; F05D2250/00; F05D2250/30; F05D2250/32; F05D2250/323
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1225242A
Cited
FR775616A
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US2094707A
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US2479776A
Cited
US2637164A
Cited
US2597253A
Cited
US2540594A
Cited
US2603062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |