US18630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Francis colton
Assignee: —
•
Filing: —
•
Granted: 1857-11-17
•
Expires: 1874-11-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:04
CPC Classifications
A; A47; A47C; A47C23/00
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) | 1860-11-16 | 1861-05-18 | 1861-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1864-11-16 | 1865-05-18 | 1865-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1868-11-16 | 1869-05-18 | 1869-11-17 | $7700.00 | Window Closed / Lapsed |