US3343871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically operated invalid chair
Assignee: Individual
•
Filing: 1966-03-03
•
Granted: 1967-09-26
•
Expires: 1986-03-03
Abstract
No abstract record available.
Inventors
- 👤 George H Yates
- 👤 William V Tittsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:06
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/14; Y; Y10; Y10S; Y10S297/00; Y10S297/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1428462A
Cited
US2053852A
Cited
US2442303A
Cited
US2690208A
Cited
US2869623A
Cited
US3138402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |