Patent US5547A successfully refreshed from Google Patents.
US5547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in anchors
Assignee: —
•
Filing: —
•
Granted: 1848-05-02
•
Expires: 1865-05-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 00:41
CPC Classifications
B; B63; B63B; B63B21/00; B63B21/24; B63B21/38; B63B21/44
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1851-05-02 | 1851-11-01 | 1852-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1855-05-02 | 1855-11-01 | 1856-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1859-05-02 | 1859-11-01 | 1860-05-02 | $7700.00 | Window Closed / Lapsed |