US3548426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hospital-type bed structure
Assignee: Foster Brothers Manufacturing Co
•
Filing: 1968-07-10
•
Granted: 1970-12-22
•
Expires: 1988-07-10
Abstract
No abstract record available.
Inventors
- 👤 William J Helton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:33
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/05; A61G7/0507; A61G7/0508; A61G7/0509; A61G7/0512; A61G7/0515
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA666373A
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US1295483A
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US1482439A
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US2652574A
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US2658207A
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US2872688A
Cited
US2871490A
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US3039118A
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US3220023A
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US3179957A
Cited
US3373453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |