Patent US2355875A successfully refreshed from Google Patents.
US2355875A
Expired / Lapsed
US
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Method of and apparatus for clarifying liquids
Assignee: Dorr Co
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Filing: 1942-04-03
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Granted: 1944-08-15
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Expires: 1962-04-03
Abstract
No abstract record available.
Inventors
- 👤 Franklin P Lasseter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:48
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0012; B01D21/0018; B01D21/0024; B01D21/003; B01D21/10; B01D21/12; B01D21/14; B01D21/16; B01D21/24; B01D21/2433; B01D21/245; B01D21/30; B01D21/32; B01D21/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-08-15 | 1948-02-14 | 1948-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-15 | 1952-02-14 | 1952-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-15 | 1956-02-14 | 1956-08-15 | $7700.00 | Window Closed / Lapsed |