Patent US28758A successfully refreshed from Google Patents.
US28758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eufus lapham
Assignee: —
•
Filing: —
•
Granted: 1860-06-19
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Expires: 1877-06-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:29
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08
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) | 1863-06-19 | 1863-12-19 | 1864-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1867-06-19 | 1867-12-19 | 1868-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1871-06-19 | 1871-12-19 | 1872-06-19 | $7700.00 | Window Closed / Lapsed |