US2713893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel chair for supporting iron lung
Assignee: Individual
•
Filing: 1951-08-24
•
Granted: 1955-07-26
•
Expires: 1971-08-24
Abstract
No abstract record available.
Inventors
- 👤 Kuhl Robert Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:56
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/1081; A61G5/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1739260A
Cited
US1277886A
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US1958494A
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US2182915A
Cited
US2236089A
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US2426432A
Cited
US2470258A
Cited
US2578382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-25 | 1959-01-24 | 1959-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-25 | 1963-01-24 | 1963-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-25 | 1967-01-24 | 1967-07-26 | $7700.00 | Window Closed / Lapsed |