Patent US431809A successfully refreshed from Google Patents.
US431809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
hartness
Assignee: —
•
Filing: —
•
Granted: 1890-07-08
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Expires: 1907-07-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:20
CPC Classifications
B; B23; B23B; B23B3/00; B23B3/16; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/12; B23Q5/18; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5152; Y10T29/5154; Y10T29/5163; Y10T29/518; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424
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) | 1893-07-07 | 1894-01-06 | 1894-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1897-07-07 | 1898-01-06 | 1898-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1901-07-08 | 1902-01-07 | 1902-07-09 | $7700.00 | Window Closed / Lapsed |