Patent EP0106112A1 successfully refreshed from Google Patents.
US228532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief-valve for air-cylinders
Assignee: —
•
Filing: —
•
Granted: 1880-06-08
•
Expires: 1897-06-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:14
CPC Classifications
F; F16; F16K; F16K15/00; E; E03; E03C; E03C1/00; E03C1/02; E03C1/10; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2557
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) | 1883-06-08 | 1883-12-08 | 1884-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1887-06-08 | 1887-12-08 | 1888-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1891-06-08 | 1891-12-08 | 1892-06-08 | $7700.00 | Window Closed / Lapsed |