US2649309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable wheel chair and steerable wheel attachment therefor
Assignee: Individual
•
Filing: 1951-06-08
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Granted: 1953-08-18
•
Expires: 1971-06-08
Abstract
No abstract record available.
Inventors
- 👤 Douglas D Deissner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:02
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/08; A61G5/0808; A61G5/0816; A61G5/0825; A61G5/0891
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) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |