US572020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waste-oil purifier
Assignee: —
•
Filing: —
•
Granted: 1896-11-24
•
Expires: 1913-11-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:36
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/18
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) | 1899-11-24 | 1900-05-26 | 1900-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1903-11-25 | 1904-05-26 | 1904-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1907-11-25 | 1908-05-26 | 1908-11-25 | $7700.00 | Window Closed / Lapsed |