US420424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ore-feeder
Assignee: —
•
Filing: —
•
Granted: 1890-01-28
•
Expires: 1907-01-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:25
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/40; B65G65/44
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) | 1893-01-27 | 1893-07-29 | 1894-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1897-01-27 | 1897-07-29 | 1898-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1901-01-28 | 1901-07-30 | 1902-01-29 | $7700.00 | Window Closed / Lapsed |