US3461464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial limb having interchangeable leg sections and length adjusting means
Assignee: Individual
•
Filing: 1967-02-15
•
Granted: 1969-08-19
•
Expires: 1987-02-15
Abstract
No abstract record available.
Inventors
- 👤 Ronald C Lindgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:01
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; A61F2/601; F; F16; F16B; F16B2200/00; F16B2200/69; F16B2200/73
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US129340A
Cited
US623741A
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US1032074A
Cited
US1144681A
Cited
US1340239A
Cited
US2080003A
Cited
GB978586A
Cited
US3400408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |