US35451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved marine propeller
Assignee: —
•
Filing: —
•
Granted: 1862-06-03
•
Expires: 1879-06-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:45
CPC Classifications
F; F04; F04D; F04D33/00; B; B63; B63H; B63H1/00; B63H1/30; B63H1/36; B63H16/00; B63H16/08; B63H16/12; Y; Y02; Y02E; Y02E10/00; Y02E10/70
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) | 1865-06-02 | 1865-12-02 | 1866-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1869-06-02 | 1869-12-02 | 1870-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1873-06-02 | 1873-12-02 | 1874-06-03 | $7700.00 | Window Closed / Lapsed |