US23894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
allen
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
2026-10-24 02:50
CPC Classifications
B; B63; B63B; B63B21/00; B63B21/04; B63B21/08; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10T; Y10T24/00; Y10T24/39; Y10T24/3969; Y10T24/3976
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) | 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 |