US3008293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermittently-operating thermo-propulsive duct designed for driving a shaft and applicable to rotary wing aircraft
Assignee: Safran Aircraft Engines SAS
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Filing: 1958-05-09
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Granted: 1961-11-14
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Expires: 1978-05-09
Abstract
No abstract record available.
Inventors
- 👤 Servanty Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:34
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/04; B64C27/12; B64C27/16; B64C27/18; F; F02; F02K; F02K7/00; F02K7/005; F02K7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR570826A
Cited
FR28869E
Cited
US2543758A
Cited
CH281852A
Cited
US2651376A
Cited
US2631676A
Cited
US2686567A
Cited
US2805545A
Cited
US2812635A
Cited
US2818122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-13 | 1965-05-15 | 1965-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-13 | 1969-05-15 | 1969-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-13 | 1973-05-15 | 1973-11-14 | $7700.00 | Window Closed / Lapsed |