Patent US219461A successfully refreshed from Google Patents.
US219461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in hats
Assignee: —
•
Filing: —
•
Granted: 1879-09-09
•
Expires: 1896-09-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:39
CPC Classifications
A; A42; A42B; A42B1/00; A42B1/04
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) | 1882-09-08 | 1883-03-10 | 1883-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-09-08 | 1887-03-10 | 1887-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-09-08 | 1891-03-10 | 1891-09-09 | $7700.00 | Window Closed / Lapsed |