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US439573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hanging rudder
Assignee: —
•
Filing: —
•
Granted: 1890-10-28
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Expires: 1907-10-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:56
CPC Classifications
B; B63; B63H; B63H25/00; B63H25/06; B63H25/38; B63H25/382; B63H2025/384; B63H2025/385
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) | 1893-10-27 | 1894-04-28 | 1894-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1897-10-27 | 1898-04-28 | 1898-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1901-10-28 | 1902-04-29 | 1902-10-29 | $7700.00 | Window Closed / Lapsed |