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US2575607A
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Cyclone separator
Assignee: Svenska Flaktfabriken AB
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Filing: 1948-11-10
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Granted: 1951-11-20
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Expires: 1968-11-10
Abstract
No abstract record available.
Inventors
- 👤 Wallin Sven Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:38
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/08; B04C5/103; B04C5/12; B04C5/24; B04C5/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US466962A
Cited
US1239456A
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US1708697A
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GB406036A
Cited
US2067710A
Cited
US2155911A
Cited
US2289329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |