US2561370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial leg with controlled knee locking means
Assignee: Individual
•
Filing: 1948-07-09
•
Granted: 1951-07-24
•
Expires: 1968-07-09
Abstract
No abstract record available.
Inventors
- 👤 Ulrich K Henschke
- 👤 Hans A Mauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:02
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/68; A61F2/60; A61F2/64; A61F2/74; A61F2/748; A61F2002/6818; A61F2002/6854
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |