US2742973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powered invalid chair and handle control therefor
Assignee: Individual
•
Filing: 1953-01-28
•
Granted: 1956-04-24
•
Expires: 1973-01-28
Abstract
No abstract record available.
Inventors
- 👤 Johannesen Hans Arne Ingolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:20
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/06; A61G5/061; A61G5/063; A61G5/065; Y; Y10; Y10S; Y10S180/00; Y10S180/907; Y10S280/00; Y10S280/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1191394A
Cited
US1262806A
Cited
US1259064A
Cited
US1348568A
Cited
US1551127A
Cited
US2138239A
Cited
US2399605A
Cited
US2400824A
Cited
US2592023A
Cited
US2633363A
Cited
US2641325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |