Patent US2500738A successfully refreshed from Google Patents.
US2500738A
Expired / Lapsed
US
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Invalid's bed
Assignee: BEEM FOUNDATION
•
Filing: 1945-07-03
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Granted: 1950-03-14
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Expires: 1965-07-03
Abstract
No abstract record available.
Inventors
- 👤 Beem Marvel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:51
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE144374C
Cited
US138083A
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US467017A
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US557614A
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US809051A
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US1037392A
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US1636705A
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US1707464A
Cited
GB341866A
Cited
US2254678A
Cited
US2349701A
Cited
US2369447A
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 |