Patent US23983A successfully refreshed from Google Patents.
US23983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
leonard
Assignee: —
•
Filing: —
•
Granted: 1859-05-10
•
Expires: 1876-05-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:49
CPC Classifications
F; F24; F24B; F24B5/00; F24B5/06; F24B5/08; F24B5/082
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) | 1862-05-09 | 1862-11-08 | 1863-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1866-05-09 | 1866-11-08 | 1867-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1870-05-09 | 1870-11-08 | 1871-05-10 | $7700.00 | Window Closed / Lapsed |