US93609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in lightning-rods
Assignee: —
•
Filing: —
•
Granted: 1869-08-10
•
Expires: 1886-08-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:06
CPC Classifications
H; H02; H02G; H02G13/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12882
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) | 1872-08-09 | 1873-02-08 | 1873-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1876-08-09 | 1877-02-08 | 1877-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1880-08-09 | 1881-02-08 | 1881-08-10 | $7700.00 | Window Closed / Lapsed |