Patent US2290349A successfully refreshed from Google Patents.
Patent US3495869A successfully refreshed from Google Patents.
US3495869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel chair
Assignee: Individual
•
Filing: 1967-09-08
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Granted: 1970-02-17
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Expires: 1987-09-08
Abstract
No abstract record available.
Inventors
- 👤 Curt Adils Ingemansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:11
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/1056; A61G5/1059; A61G5/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2609862A
Cited
US2587068A
Cited
US2694437A
Cited
US2869614A
Cited
US3038174A
Cited
US3147039A
Cited
US3142509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |