US21864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
daniels
Assignee: —
•
Filing: —
•
Granted: 1858-10-19
•
Expires: 1875-10-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/20; B23B31/201; B23B31/207; B23B31/2073; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17411; Y10T279/17529
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) | 1861-10-18 | 1862-04-19 | 1862-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1865-10-18 | 1866-04-19 | 1866-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1869-10-18 | 1870-04-19 | 1870-10-19 | $7700.00 | Window Closed / Lapsed |