Patent US28847A successfully refreshed from Google Patents.
US28847A
Expired / Lapsed
US
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Improvement in corn-planters
Assignee: —
•
Filing: —
•
Granted: 1860-06-26
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Expires: 1877-06-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:37
CPC Classifications
A; A01; A01B; A01B69/00; A01B69/02; A01B69/024
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) | 1863-06-26 | 1863-12-26 | 1864-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1867-06-26 | 1867-12-26 | 1868-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1871-06-26 | 1871-12-26 | 1872-06-26 | $7700.00 | Window Closed / Lapsed |