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Patent US2989843A successfully refreshed from Google Patents.
US2989843A
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US
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Engine for supersonic flight
Assignee: Curtiss Wright Corp
•
Filing: 1953-07-24
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Granted: 1961-06-27
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Expires: 1973-07-24
Abstract
No abstract record available.
Inventors
- 👤 Ferri Antonio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:44
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/003; F02K; F02K3/00; F02K3/02; F02K3/04; F02K3/062; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2504181A
Cited
USRE23639E
Cited
US1714917A
Cited
US1802860A
Cited
US2455458A
Cited
GB585344A
Cited
GB588096A
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 |