US2500744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Invalid's bed
Assignee: BEEM FOUNDATION
•
Filing: 1946-08-19
•
Granted: 1950-03-14
•
Expires: 1966-08-19
Abstract
No abstract record available.
Inventors
- 👤 Marvel D Beem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:25
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/02; A61G7/002; A61G7/015; A61G7/05; A61G7/053; A61G7/0533
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US522342A
Cited
US826978A
Cited
US892817A
Cited
US1298362A
Cited
US1840170A
Cited
CH122878A
Cited
US2057811A
Cited
US2245331A
Cited
US2406480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |