US3391540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbojet engines having contrarotating compressors
Assignee: Safran Aircraft Engines SAS
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Filing: 1966-08-03
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Granted: 1968-07-09
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Expires: 1986-08-03
Abstract
No abstract record available.
Inventors
- 👤 Bauger Louis Jules
- 👤 Bouiller Jean Georges
- 👤 Garnier Michel Robert
- 👤 Lacroix Armand Jean-Baptiste
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:29
CPC Classifications
F; F02; F02C; F02C3/00; F02C3/04; F02C3/06; F02C3/067; F02K; F02K3/00; F02K3/02; F02K3/04; F02K3/06; F02K3/072; F04; F04D; F04D19/00; F04D19/02; F04D19/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2404767A
Cited
US2451944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |