Patent US2572149A successfully refreshed from Google Patents.
US2572149A
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US
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Wheel chair attachment
Assignee: SYLVIA HIND
•
Filing: 1949-06-03
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Granted: 1951-10-23
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Expires: 1969-06-03
Abstract
No abstract record available.
Inventors
- 👤 Hind Thomas Frank
- 👤 Hind Alfred Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:59
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/14; A61G2200/00; A61G2200/30; A61G2200/36; A61G5/02; A61G5/021; A61G5/023; A61G5/024; A61G5/026; Y; Y10; Y10S; Y10S297/00; Y10S297/04; Y10S297/10
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) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |