US109371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in hydraulic stop-valves
Assignee: —
•
Filing: —
•
Granted: 1870-11-22
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Expires: 1887-11-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:07
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/044; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86686; Y10T137/87169; Y10T137/87917; Y10T137/88054
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) | 1873-11-21 | 1874-05-23 | 1874-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1877-11-21 | 1878-05-23 | 1878-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1881-11-21 | 1882-05-23 | 1882-11-22 | $7700.00 | Window Closed / Lapsed |