US2807174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hospital bed
Assignee: Individual
•
Filing: 1956-08-03
•
Granted: 1957-09-24
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Expires: 1976-08-03
Abstract
No abstract record available.
Inventors
- 👤 Harold D Helsel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:38
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/002; A61G7/015; A47; A47C; A47C20/00; A47C20/04; A47C20/041; Y; Y10; Y10T; Y10T403/00; Y10T403/65; Y10T403/66; Y10T403/71; Y10T403/7152; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18696
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) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |