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US11217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in lightning-rods for vessels
Assignee: —
•
Filing: —
•
Granted: 1854-07-04
•
Expires: 1871-07-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:47
CPC Classifications
H; H02; H02G; H02G13/00
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) | 1857-07-03 | 1858-01-02 | 1858-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1861-07-03 | 1862-01-02 | 1862-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1865-07-03 | 1866-01-02 | 1866-07-04 | $7700.00 | Window Closed / Lapsed |