US2759525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple purpose invalid walker
Assignee: Individual
•
Filing: 1954-12-28
•
Granted: 1956-08-21
•
Expires: 1974-12-28
Abstract
No abstract record available.
Inventors
- 👤 Elmer F Ries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:56
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/04; A61H2003/002; A61H2003/004; A61H2201/00; A61H2201/16; A61H2201/1602; A61H2201/1614; A61H2201/1628; A61H2201/1633; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2168424A
Cited
US2459066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |