US2068099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of liquids and solids
Assignee: Individual
•
Filing: 1935-05-15
•
Granted: 1937-01-19
•
Expires: 1955-05-15
Abstract
No abstract record available.
Inventors
- 👤 Melvin D Engle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:01
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/005; B01D24/00; B01D24/02; B01D24/20; B01D24/24; B01D24/46; B01D24/4631; B01D2201/00; B01D2201/20; B01D2201/204; B01D2201/208
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) | 1940-01-19 | 1940-07-20 | 1941-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-01-19 | 1944-07-20 | 1945-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-01-19 | 1948-07-20 | 1949-01-19 | $7700.00 | Window Closed / Lapsed |