US8546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating rudders
Assignee: —
•
Filing: —
•
Granted: 1851-11-25
•
Expires: 1868-11-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:02
CPC Classifications
B; B63; B63H; B63H25/00; B63H25/06; B63H25/08; B63H25/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31844; Y10T428/31848; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/671; Y10T442/674; Y10T442/679
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) | 1854-11-24 | 1855-05-26 | 1855-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1858-11-24 | 1859-05-26 | 1859-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1862-11-24 | 1863-05-26 | 1863-11-25 | $7700.00 | Window Closed / Lapsed |