Patent US752552A successfully refreshed from Google Patents.
US216486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in hay
Assignee: —
•
Filing: —
•
Granted: 1879-06-10
•
Expires: 1896-06-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:42
CPC Classifications
A; A01; A01F; A01F29/00; A01F29/09; A01F29/095; B; B02; B02C; B02C18/00; B02C18/06; B02C18/14; B02C18/148; Y; Y10; Y10T; Y10T83/00; Y10T83/647; Y10T83/664; Y10T83/6648; Y10T83/929; Y10T83/9372; Y10T83/9396
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) | 1882-06-09 | 1882-12-09 | 1883-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-06-09 | 1886-12-09 | 1887-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-06-09 | 1890-12-09 | 1891-06-10 | $7700.00 | Window Closed / Lapsed |