US2881858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating dust or liquid drops from a gaseous medium
Assignee: Svenska Flaktfabriken AB
•
Filing: 1956-05-15
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Granted: 1959-04-14
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Expires: 1976-05-15
Abstract
No abstract record available.
Inventors
- 👤 Krantz Evert
- 👤 Sjalin Kjell-Erik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:22
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/02; B04C5/04; B04C5/12; B04C5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1930476A
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GB190402792A
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US2547190A
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GB635539A
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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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |