Patent US2956398A successfully refreshed from Google Patents.
US2956398A
Expired / Lapsed
US
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Ram jet control
Assignee: Curtiss Wright Corp
•
Filing: 1955-10-31
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Granted: 1960-10-18
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Expires: 1975-10-31
Abstract
No abstract record available.
Inventors
- 👤 Muhlfelder Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:42
CPC Classifications
F; F02; F02M; F02M7/00; F02M7/12; F02M7/18; F02M7/20; F02C; F02C7/00; F02C7/04; F02C7/042; F05; F05D; F05D2220/00; F05D2220/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2540594A
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US2796730A
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US2638738A
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US2766579A
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US2687612A
Cited
FR1086376A
Cited
GB769101A
Cited
US2777289A
Cited
US2867084A
Cited
US2734340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |