Patent US2570581A successfully refreshed from Google Patents.
US2570581A
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Artificial leg
Assignee: ROSE K MCINTYRE
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Filing: 1949-10-15
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Granted: 1951-10-09
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Expires: 1969-10-15
Abstract
No abstract record available.
Inventors
- 👤 Manuel A Mcintyre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:53
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; A61F2/604; A61F2/64; A61F2/66; A61F2/6607; A61F2002/5038; A61F2002/5043; A61F2002/5072; A61F2002/5073; A61F2002/5075; A61F2/78; A61F2002/7862; A61F2002/7875; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32081; Y10T403/32254; Y10T403/32262; Y10T403/32418; Y10T403/32606; Y10T403/32614
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) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |