Patent US2889927A successfully refreshed from Google Patents.
US2889927A
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Process for clarifying a liquid and multitray apparatus therefor
Assignee: Dorr Oliver Inc
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Filing: 1955-04-29
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Granted: 1959-06-09
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Expires: 1975-04-29
Abstract
No abstract record available.
Inventors
- 👤 Robert H Van Note
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:47
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/10; B01D21/12; B01D21/14; B01D21/0006; B01D21/0024; B01D21/003; B01D21/0036; B01D21/16; B01D21/18; B01D21/186; B01D21/24; B01D21/2405; B01D21/2411; B01D21/2427; B01D21/2433; B01D21/2438; B01D21/245; B01D21/30; B01D21/34; B01D2221/00; B01D2221/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1336553A
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US1595066A
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US2253878A
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US2343836A
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US2377875A
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US2355875A
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US2483648A
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US2488851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |