Patent US4763950A successfully refreshed from Google Patents.
US374649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-radiating mantel
Assignee: —
•
Filing: —
•
Granted: 1887-12-13
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Expires: 1904-12-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:17
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/183; F24B1/185; F24B1/188; F24B1/1881; F24C; F24C13/00; F24C3/00; F24C3/002; F24C3/006; F24H; F24H1/00; F24H1/0063; F24D; F24D2200/00; F24D2200/10; F24H2230/00
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) | 1890-12-12 | 1891-06-13 | 1891-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1894-12-12 | 1895-06-13 | 1895-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1898-12-12 | 1899-06-13 | 1899-12-13 | $7700.00 | Window Closed / Lapsed |