US2404872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for separating immiscible fluids
Assignee: Selas Corp of America
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Filing: 1941-12-29
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Granted: 1946-07-30
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Expires: 1961-12-29
Abstract
No abstract record available.
Inventors
- 👤 Jr John M Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:51
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D17/00; B01D17/02; B01D17/04; B01D17/08; B01D17/10; Y; Y10; Y10S; Y10S210/00; Y10S210/05
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) | 1949-07-29 | 1950-01-28 | 1950-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-29 | 1954-01-28 | 1954-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-29 | 1958-01-28 | 1958-07-30 | $7700.00 | Window Closed / Lapsed |