Patent US31509A successfully refreshed from Google Patents.
US31509A
Expired / Lapsed
US
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Assignee: —
•
Filing: —
•
Granted: 1861-02-19
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Expires: 1878-02-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:18
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/48; B23Q1/4804
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) | 1864-02-19 | 1864-08-20 | 1865-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1868-02-19 | 1868-08-20 | 1869-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1872-02-19 | 1872-08-20 | 1873-02-19 | $7700.00 | Window Closed / Lapsed |