US2673987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Invalid carrier with rotatable chair
Assignee: Individual
•
Filing: 1951-10-22
•
Granted: 1954-04-06
•
Expires: 1971-10-22
Abstract
No abstract record available.
Inventors
- 👤 James L Upshaw
- 👤 Carl J Dolphin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:00
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/10; A61G7/1001; A61G7/1007; A61G7/1073; A61G7/1076; A61G7/1082; A61G7/109; A61G2203/00; A61G2203/70; A61G2203/72; A61G2203/723; A61G5/00; A61G5/006; A61G7/1013; A61G7/1019; A61G7/104; A61G7/1046; A61G7/1049; A61G7/1057; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |