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US2645779A
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US
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Artificial limb knee structure
Assignee: Individual
•
Filing: 1951-06-25
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Granted: 1953-07-21
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Expires: 1971-06-25
Abstract
No abstract record available.
Inventors
- 👤 Louis H Barghausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:50
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; A61F2/64; A61F2002/5072; A61F2002/5078; A61F2/68; A61F2002/6818
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2542567A
Cited
US2513134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |