Patent US6623A successfully refreshed from Google Patents.
US6623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
davison
Assignee: —
•
Filing: —
•
Granted: 1849-08-07
•
Expires: 1866-08-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:32
CPC Classifications
B; B01; B01F; B01F29/00; B01F29/60; B01F29/63
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) | 1852-08-06 | 1853-02-05 | 1853-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1856-08-06 | 1857-02-05 | 1857-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1860-08-06 | 1861-02-05 | 1861-08-07 | $7700.00 | Window Closed / Lapsed |