Patent US2843853A successfully refreshed from Google Patents.
US2843853A
Expired / Lapsed
US
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Control mechanism for artificial ankle
Assignee: Individual
•
Filing: 1956-11-26
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Granted: 1958-07-22
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Expires: 1976-11-26
Abstract
No abstract record available.
Inventors
- 👤 Hans A Mauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:58
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; A61F2/66; A61F2/6607; A61F2/68; A61F2/74; A61F2/744; A61F2002/501; A61F2002/5016; A61F2002/503; A61F2002/5067; A61F2002/5069; A61F2002/5072; A61F2002/5073; A61F2002/5075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2470480A
Cited
US2561370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |