US2937694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tray assembly for attachment to a wheelchair
Assignee: Individual
•
Filing: 1958-09-19
•
Granted: 1960-05-24
•
Expires: 1978-09-19
Abstract
No abstract record available.
Inventors
- 👤 Weaver E Willson
- 👤 Arthur L Sneed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:58
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A47; A47C; A47C7/00; A47C7/62; A47C7/68; A61G5/1094
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US318131A
Cited
US368389A
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US597598A
Cited
US2728378A
Cited
US1452911A
Cited
US1645769A
Cited
US1838856A
Cited
US2197359A
Cited
US2798565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |