US2425110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means including a helical ramp for centrifugally separating solids from liquids
Assignee: Individual
•
Filing: 1944-09-18
•
Granted: 1947-08-05
•
Expires: 1964-09-18
Abstract
No abstract record available.
Inventors
- 👤 Mccurdy Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:55
CPC Classifications
B; B04; B04C; B04C3/00; B01; B01D; B01D21/00; B01D21/0039; B01D21/0042; B01D21/24; B01D21/2427; B01D21/26; B04C5/00; B04C5/02; B04C5/04; B04C5/08; B04C5/103
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) | 1950-08-04 | 1951-02-03 | 1951-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-04 | 1955-02-03 | 1955-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-04 | 1959-02-03 | 1959-08-05 | $7700.00 | Window Closed / Lapsed |