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Patent US2767871A successfully refreshed from Google Patents.
US2767871A
Expired / Lapsed
US
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Nursing device
Assignee: Individual
•
Filing: 1952-07-22
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Granted: 1956-10-23
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Expires: 1972-07-22
Abstract
No abstract record available.
Inventors
- 👤 Clarence M Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:51
CPC Classifications
A; A61; A61J; A61J11/00; A61J11/0005; A61J11/001; A61J11/002; A61J11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US411794A
Cited
DE488C
Cited
US2093130A
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US2387573A
Cited
US2520157A
Cited
US2584359A
Cited
US2546681A
Cited
US2624485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |