US2924832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sanitary bed
Assignee: Individual
•
Filing: 1957-01-31
•
Granted: 1960-02-16
•
Expires: 1977-01-31
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Knowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:36
CPC Classifications
A; A47; A47D; A47D7/00; A47D15/00; A47D15/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |