US8736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
carter
Assignee: —
•
Filing: —
•
Granted: 1852-02-17
•
Expires: 1869-02-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:57
CPC Classifications
E; E21; E21F; E21F1/00; E21F1/10; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8691; Y10T83/887
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) | 1855-02-16 | 1855-08-18 | 1856-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1859-02-16 | 1859-08-18 | 1860-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1863-02-16 | 1863-08-18 | 1864-02-17 | $7700.00 | Window Closed / Lapsed |