Patent US2644584A successfully refreshed from Google Patents.
US2644584A
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US
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Oil separator
Assignee: Individual
•
Filing: 1949-11-18
•
Granted: 1953-07-07
•
Expires: 1969-11-18
Abstract
No abstract record available.
Inventors
- 👤 Harold L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:24
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6991
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US897125A
Cited
US1174549A
Cited
US1262076A
Cited
US1601478A
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US1910186A
Cited
US1982062A
Cited
US2307498A
Cited
US2328027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |