Patent US23038A successfully refreshed from Google Patents.
US23038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
James montgomery
Assignee: —
•
Filing: —
•
Granted: 1859-02-22
•
Expires: 1876-02-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:12
CPC Classifications
E; E01; E01C; E01C5/00; E01C5/20
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) | 1862-02-21 | 1862-08-23 | 1863-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1866-02-21 | 1866-08-23 | 1867-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1870-02-21 | 1870-08-23 | 1871-02-22 | $7700.00 | Window Closed / Lapsed |