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Patent US2858020A successfully refreshed from Google Patents.
US2858020A
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Method and apparatus for separating slurry and like suspensions
Assignee: FLSmidth and Co AS
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Filing: 1955-09-19
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Granted: 1958-10-28
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Expires: 1975-09-19
Abstract
No abstract record available.
Inventors
- 👤 Bek Steen Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:33
CPC Classifications
B; B28; B28C; B28C1/00; B28C1/02; B28C1/06; B28C1/08; B04; B04C; B04C5/00; B04C5/02; B04C5/04; B04C5/24; B04C5/28; B04C9/00; B04C2009/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |