Patent US379446A successfully refreshed from Google Patents.
US379446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: —
•
Filing: —
•
Granted: 1888-03-13
•
Expires: 1905-03-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:32
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/10; F04B39/102; F04B39/1033; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7559
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1891-03-13 | 1891-09-12 | 1892-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1895-03-13 | 1895-09-12 | 1896-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1899-03-13 | 1899-09-12 | 1900-03-14 | $7700.00 | Window Closed / Lapsed |