US92031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved artificial leg
Assignee: —
•
Filing: —
•
Granted: 1869-06-29
•
Expires: 1886-06-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:57
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; A61F2/64; A61F2/66; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2002/30462; A61F2002/5072; A61F2002/5093; A61F2002/6614; A61F2002/6621; A61F2220/00; A61F2220/0025; A61F2220/0075
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) | 1872-06-28 | 1872-12-28 | 1873-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1876-06-28 | 1876-12-28 | 1877-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1880-06-28 | 1880-12-28 | 1881-06-29 | $7700.00 | Window Closed / Lapsed |