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Patent US2975434A successfully refreshed from Google Patents.
US2975434A
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Hospital patient lift attachment
Assignee: Individual
•
Filing: 1958-06-30
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Granted: 1961-03-21
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Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Frederick M Butler
- 👤 Jule T Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:09
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/10; A61G7/1013; A61G7/1017; A61G7/104; A61G7/1046; A61G7/1049; A61G7/1055; A61G2200/00; A61G2200/30; A61G2200/32; A61G7/1073; A61G7/1076
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
GB190207721A
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US935170A
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US977243A
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US1385424A
Cited
FR775907A
Cited
FR809840A
Cited
US2620198A
Cited
BE511977A
Cited
US2829917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |