Patent US2372A successfully refreshed from Google Patents.
US2372A
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US
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Assignee: —
•
Filing: —
•
Granted: 1841-11-25
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Expires: 1858-11-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:56
CPC Classifications
B; B23; B23D; B23D55/00; B23D55/06; Y; Y10; Y10T; Y10T408/00; Y10T408/39; Y10T408/65; Y10T408/655; Y10T83/00; Y10T83/707
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) | 1844-11-24 | 1845-05-26 | 1845-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1848-11-24 | 1849-05-26 | 1849-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1852-11-24 | 1853-05-26 | 1853-11-25 | $7700.00 | Window Closed / Lapsed |