US5641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in sofa-bedsteads
Assignee: —
•
Filing: —
•
Granted: 1848-06-20
•
Expires: 1865-06-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:22
CPC Classifications
A; A47; A47C; A47C17/00; A47C17/04; A47C17/16; A47C17/17; A47C17/175; A47C17/1756
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) | 1851-06-20 | 1851-12-20 | 1852-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1855-06-20 | 1855-12-20 | 1856-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1859-06-20 | 1859-12-20 | 1860-06-20 | $7700.00 | Window Closed / Lapsed |