US168558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in railroad-rail joints
Assignee: —
•
Filing: —
•
Granted: 1875-10-11
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Expires: 1892-10-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:14
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/24; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/956; Y10S411/96
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) | 1878-10-10 | 1879-04-11 | 1879-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1882-10-10 | 1883-04-11 | 1883-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1886-10-10 | 1887-04-11 | 1887-10-11 | $7700.00 | Window Closed / Lapsed |