Patent US869842A successfully refreshed from Google Patents.
Patent US293886A successfully refreshed from Google Patents.
US293886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
johk b
Assignee: —
•
Filing: —
•
Granted: 1884-02-19
•
Expires: 1901-02-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:21
CPC Classifications
C; C22; C22C; C22C11/00; C22C11/02; H; H10; H10W; H10W72/00; H10W72/20
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) | 1887-02-18 | 1887-08-20 | 1888-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1891-02-18 | 1891-08-20 | 1892-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1895-02-18 | 1895-08-20 | 1896-02-19 | $7700.00 | Window Closed / Lapsed |