Patent US2687765A successfully refreshed from Google Patents.
US2687765A
Expired / Lapsed
US
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Invalid's convertible bed-chair
Assignee: Individual
•
Filing: 1952-02-28
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Granted: 1954-08-31
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Expires: 1972-02-28
Abstract
No abstract record available.
Inventors
- 👤 Hurtubise May Constance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:17
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/006; A61G2203/00; A61G2203/70; A61G2203/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US279334A
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US366479A
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US463348A
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US513584A
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US2092266A
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US2092669A
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US2476258A
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US2609862A
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US2529780A
Cited
US2613725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |