Patent US39361A successfully refreshed from Google Patents.
US39361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in artificial legs
Assignee: —
•
Filing: —
•
Granted: 1863-07-28
•
Expires: 1880-07-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:29
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; A61F2/64; A61F2/66; A61F2/6607; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2002/30462; A61F2002/6614; A61F2/78; A61F2002/7862; A61F2220/00; A61F2220/0025; A61F2220/0075
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) | 1866-07-27 | 1867-01-26 | 1867-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1870-07-27 | 1871-01-26 | 1871-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1874-07-27 | 1875-01-26 | 1875-07-28 | $7700.00 | Window Closed / Lapsed |