US490146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge-valve for blowing-engines
Assignee: —
•
Filing: —
•
Granted: 1893-01-17
•
Expires: 1910-01-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:24
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/02; F04B15/023; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759
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) | 1896-01-17 | 1896-07-18 | 1897-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1900-01-17 | 1900-07-19 | 1901-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1904-01-18 | 1904-07-19 | 1905-01-18 | $7700.00 | Window Closed / Lapsed |