US2714879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve means for two stroke cycle internal combustion engines
Assignee: Safran Aircraft Engines SAS
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Filing: 1951-08-01
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Granted: 1955-08-09
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Expires: 1971-08-01
Abstract
No abstract record available.
Inventors
- 👤 Meulien Henri
- 👤 Bertin Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:00
CPC Classifications
F; F02; F02D; F02D13/00; F02D13/02; F02D13/028; F02D13/0284; F01; F01L; F01L5/00; F01L5/04; F01L5/06; F01L5/08; F01L5/10; F01L5/14; F01L5/18; F02B; F02B25/00; F02B25/02; F02B25/04; F02B25/20; F02B25/24; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190902466A
Cited
US1140394A
Cited
US1669780A
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US1630245A
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US1855290A
Cited
DE514286C
Cited
DE628245C
Cited
GB493727A
Cited
US2229709A
Cited
US2197107A
Cited
FR855408A
Cited
FR50888E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |