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Patent US1902A successfully refreshed from Google Patents.
US1902A
Expired / Lapsed
US
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Assignee: —
•
Filing: —
•
Granted: 1840-12-14
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Expires: 1857-12-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:56
CPC Classifications
D; D06; D06C; D06C3/00; Y; Y10; Y10S; Y10S26/00; Y10S26/01
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) | 1843-12-14 | 1844-06-14 | 1844-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1847-12-14 | 1848-06-14 | 1848-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1851-12-14 | 1852-06-14 | 1852-12-14 | $7700.00 | Window Closed / Lapsed |