US3535850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal particle separator
Assignee: HANS J P VON OHAIN
•
Filing: 1966-10-28
•
Granted: 1970-10-27
•
Expires: 1986-10-28
Abstract
No abstract record available.
Inventors
- 👤 Hans J P Von Ohain
- 👤 Roscoe H Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:47
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/02; B04C5/24; B04C7/00
Claims Analysis
Total Claims: 0
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AT202987B
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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) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |