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US6409A
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Assignee: —
•
Filing: —
•
Granted: 1849-05-01
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Expires: 1866-05-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:17
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/005; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/80; Y10T70/8432; Y10T70/8568; Y10T70/8865
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) | 1852-04-30 | 1852-10-30 | 1853-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1856-04-30 | 1856-10-30 | 1857-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1860-04-30 | 1860-10-30 | 1861-05-01 | $7700.00 | Window Closed / Lapsed |