US3049364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stair climbing wheel chair
Assignee: Individual
•
Filing: 1961-04-07
•
Granted: 1962-08-14
•
Expires: 1981-04-07
Abstract
No abstract record available.
Inventors
- 👤 Eugene O Clay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:41
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/06; A61G5/061; A61G5/066; A61G5/02; A61G5/021; A61G5/023; A61G5/024; A61G5/026; Y; Y10; Y10S; Y10S280/00; Y10S280/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1739260A
Cited
US882248A
Cited
US2436619A
Cited
US2742973A
Cited
FR1059735A
Cited
US2787472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |