US2587227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for sucking in the boundary layers on the surfaces of reaction jet flying machines
Assignee: Safran Aircraft Engines SAS
•
Filing: 1948-07-07
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Granted: 1952-02-26
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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
2026-11-01 01:43
CPC Classifications
B; B64; B64C; B64C21/00; B64C21/02; B64C21/06; B64C2230/00; B64C2230/04; B64C2230/06; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2085761A
Cited
US2453721A
Cited
US2348253A
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US2346178A
Cited
US2390161A
Cited
US2383385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |