US2834534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal air compressor control device
Assignee: Safran Aircraft Engines SAS
•
Filing: 1952-09-22
•
Granted: 1958-05-13
•
Expires: 1972-09-22
Abstract
No abstract record available.
Inventors
- 👤 Kadosch Marcel
- 👤 Foll Jean Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:12
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/46; F04D29/462
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2597253A
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US2564671A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |