US2556121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable wheel chair walking apparatus
Assignee: Individual
•
Filing: 1949-07-13
•
Granted: 1951-06-05
•
Expires: 1969-07-13
Abstract
No abstract record available.
Inventors
- 👤 Jean D Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:03
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/04; A61G; A61G5/00; A61G5/10; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1420095A
Cited
US2300608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |