Patent US1144681A successfully refreshed from Google Patents.
US1144681A
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US
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Artificial leg.
Assignee: Individual
•
Filing: 1914-12-15
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Granted: 1915-06-29
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Expires: 1934-12-15
Abstract
No abstract record available.
Inventors
- 👤 John T Apgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:49
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; A61F2/601; A61F2/64; A61F2/78; A61F2/80; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2002/30433; A61F2002/5072; A61F2002/5096; A61F2/66; A61F2002/6614; A61F2220/00; A61F2220/0025; A61F2220/0041
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) | 1918-06-28 | 1918-12-28 | 1919-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-06-28 | 1922-12-28 | 1923-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-06-28 | 1926-12-28 | 1927-06-29 | $7700.00 | Window Closed / Lapsed |