US2652898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for stabilizing rotary-wing aircraft
Assignee: Societe Nationale des Constructions Aeronautiques du Sud Est SNCASE
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Filing: 1948-07-03
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Granted: 1953-09-22
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Expires: 1968-07-03
Abstract
No abstract record available.
Inventors
- 👤 Renoux Pierre Edouard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:51
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1986709A
Cited
US2444070A
Cited
US2428200A
Cited
FR892653A
Cited
US2415148A
Cited
US2529479A
Cited
US2443192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |