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Patent US2823804A successfully refreshed from Google Patents.
US2823804A
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Filter combined with gravitation separator
Assignee: Individual
•
Filing: 1954-03-17
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Granted: 1958-02-18
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Expires: 1974-03-17
Abstract
No abstract record available.
Inventors
- 👤 Myring Aksel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:20
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1062236A
Cited
US972281A
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US1081936A
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FR25647E
Cited
US1602935A
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US1724690A
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US1744837A
Cited
US1638066A
Cited
US1675378A
Cited
FR699299A
Cited
FR1058438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |