US3673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in renovating tobacco
Assignee: —
•
Filing: —
•
Granted: 1844-07-22
•
Expires: 1861-07-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:29
CPC Classifications
A; A24; A24B; A24B3/00; A24B3/02
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) | 1847-07-22 | 1848-01-21 | 1848-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1851-07-22 | 1852-01-21 | 1852-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1855-07-22 | 1856-01-21 | 1856-07-22 | $7700.00 | Window Closed / Lapsed |