Patent US2551560A successfully refreshed from Google Patents.
US2551560A
Expired / Lapsed
US
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Mother manikin for teaching approved practice of obstetrics and midwifery
Assignee: Individual
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Filing: 1950-10-18
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Granted: 1951-05-01
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Expires: 1970-10-18
Abstract
No abstract record available.
Inventors
- 👤 Graves Julia Oleander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:54
CPC Classifications
G; G09; G09B; G09B23/00; G09B23/28; G09B23/281
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |