US2642895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerodynamic valve
Assignee: Safran Aircraft Engines SAS
•
Filing: 1948-02-16
•
Granted: 1953-06-23
•
Expires: 1968-02-16
Abstract
No abstract record available.
Inventors
- 👤 Jean H Bertin
- 👤 Raymond H Marchal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:31
CPC Classifications
F; F16; F16K; F16K15/00; F02; F02K; F02K7/00; F02K7/02; F02K7/06; F02K7/067; Y; Y10; Y10S; Y10S415/00; Y10S415/914
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1315232A
Cited
US1671719A
Cited
US1246159A
Cited
US1839616A
Cited
US2206193A
Cited
GB461757A
Cited
US2198730A
Cited
GB479322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |