Patent US2520157A successfully refreshed from Google Patents.
US2520157A
Expired / Lapsed
US
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Nursing nipple
Assignee: Davol Rubber Co
•
Filing: 1945-04-25
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Granted: 1950-08-29
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Expires: 1965-04-25
Abstract
No abstract record available.
Inventors
- 👤 Little Jesse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:51
CPC Classifications
A; A61; A61J; A61J9/00; A61J9/008; A61J11/00; A61J11/0075; A61J11/008; A61J11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1297207A
Cited
US1919537A
Cited
FR699712A
Cited
US2041670A
Cited
US2093130A
Cited
US2178426A
Cited
US2269223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |