Patent US2010523A successfully refreshed from Google Patents.
US288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction of grates and fireplaces
Assignee: —
•
Filing: —
•
Granted: 1837-07-22
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Expires: 1854-07-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:07
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/191; F24B1/193
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) | 1840-07-21 | 1841-01-20 | 1841-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1844-07-21 | 1845-01-20 | 1845-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1848-07-21 | 1849-01-20 | 1849-07-22 | $7700.00 | Window Closed / Lapsed |