US8841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sice-httxieb
Assignee: —
•
Filing: —
•
Granted: 1852-03-30
•
Expires: 1869-03-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:01
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/05; B01F27/07; B01F27/072; B01F27/0726
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) | 1855-03-30 | 1855-09-29 | 1856-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1859-03-30 | 1859-09-29 | 1860-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1863-03-30 | 1863-09-29 | 1864-03-30 | $7700.00 | Window Closed / Lapsed |