Patent US2634431A successfully refreshed from Google Patents.
US2634431A
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US
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Invalid lift and carrier with stretcher clamp
Assignee: Individual
•
Filing: 1951-01-23
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Granted: 1953-04-14
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Expires: 1971-01-23
Abstract
No abstract record available.
Inventors
- 👤 Mary I Bickford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:21
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/10; A61G7/1013; A61G7/1015; A61G7/104; A61G7/1046; A61G7/1049; A61G7/1055; A61G2200/00; A61G2200/30; A61G2200/32; Y; Y10; Y10T; Y10T403/00; Y10T403/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US209519A
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US354494A
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US654165A
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US795524A
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US802728A
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GB190913665A
Cited
US985742A
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US1541938A
Cited
US1823425A
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US1878785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |