Patent US635198A successfully refreshed from Google Patents.
Patent US2472976A successfully refreshed from Google Patents.
US2472976A
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US
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Method of separating solids from liquid suspensions
Assignee: Airco Inc
•
Filing: 1945-02-21
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Granted: 1949-06-14
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Expires: 1965-02-21
Abstract
No abstract record available.
Inventors
- 👤 Charles O Hoover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:43
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/02; B01D24/10; B01D24/16; B01D24/165; B01D37/00; B01D37/02
Claims Analysis
Total Claims: 0
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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) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |