Patent US3580480A successfully refreshed from Google Patents.
Patent US8754A successfully refreshed from Google Patents.
US8754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement
Assignee: —
•
Filing: —
•
Granted: 1852-02-24
•
Expires: 1869-02-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:56
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/043; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1954
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) | 1855-02-23 | 1855-08-25 | 1856-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1859-02-23 | 1859-08-25 | 1860-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1863-02-23 | 1863-08-25 | 1864-02-24 | $7700.00 | Window Closed / Lapsed |