Patent US189461A successfully refreshed from Google Patents.
US189461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in scroll-saws
Assignee: —
•
Filing: —
•
Granted: 1877-04-10
•
Expires: 1894-04-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:26
CPC Classifications
B; B23; B23D; B23D49/00; B23D49/007; Y; Y10; Y10T; Y10T83/00; Y10T83/687; Y10T83/7045; Y10T83/705; Y10T83/7055; Y10T83/7065
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) | 1880-04-09 | 1880-10-09 | 1881-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1884-04-09 | 1884-10-09 | 1885-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1888-04-09 | 1888-10-09 | 1889-04-10 | $7700.00 | Window Closed / Lapsed |