US4386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
jennison
Assignee: —
•
Filing: —
•
Granted: 1846-02-20
•
Expires: 1863-02-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:53
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/38; C; C02; C02F; C02F2307/00; C02F2307/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1849-02-19 | 1849-08-21 | 1850-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1853-02-19 | 1853-08-21 | 1854-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1857-02-19 | 1857-08-21 | 1858-02-20 | $7700.00 | Window Closed / Lapsed |