Patent US1558234A successfully refreshed from Google Patents.
US297242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
•
Filing: —
•
Granted: 1884-04-22
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Expires: 1901-04-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:42
CPC Classifications
B; B23; B23D; B23D51/00; B23D51/08; B23D51/10; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12361; Y10T428/12382; Y10T83/00; Y10T83/929; Y10T83/9457; Y10T83/9473; Y10T83/9481
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) | 1887-04-22 | 1887-10-22 | 1888-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1891-04-22 | 1891-10-22 | 1892-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1895-04-22 | 1895-10-22 | 1896-04-22 | $7700.00 | Window Closed / Lapsed |