US2577919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Association on flying machine of compressor-jet units with ramjet units
Assignee: Safran Aircraft Engines SAS
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Filing: 1948-07-07
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Granted: 1951-12-11
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Expires: 1968-07-07
Abstract
No abstract record available.
Inventors
- 👤 Roy Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:43
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/10; F02K7/16; F02K3/00; F02K3/02; F02K3/04; F02K3/068; F02K3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB390363A
Cited
GB537483A
Cited
US2453721A
Cited
US2346178A
Cited
GB586572A
Cited
US2446266A
Cited
US2447100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |