US23839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve-gear of steam-ewgines
Assignee: —
•
Filing: —
•
Granted: 1859-05-03
•
Expires: 1876-05-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:56
CPC Classifications
G; G05; G05G; G05G17/00; H; H01; H01H; H01H3/00; H01H3/22; H01H3/30; H01H3/3031; Y; Y10; Y10T; Y10T74/00; Y10T74/11; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/1896
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) | 1862-05-02 | 1862-11-01 | 1863-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1866-05-02 | 1866-11-01 | 1867-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1870-05-02 | 1870-11-01 | 1871-05-03 | $7700.00 | Window Closed / Lapsed |