Patent US2680440A successfully refreshed from Google Patents.
US2680440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hypodermic unit
Assignee: Individual
•
Filing: 1951-03-27
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Granted: 1954-06-08
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Expires: 1971-03-27
Abstract
No abstract record available.
Inventors
- 👤 Dorothy B Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:54
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/28; A61M5/284; A61M5/31; A61M2005/3103; A61M2005/3107; A61M2005/311; A61M5/281; A61M5/282
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB191516545A
Cited
GB109040A
Cited
US1522198A
Cited
US1572324A
Cited
US1541615A
Cited
US1815300A
Cited
US2134144A
Cited
US2371086A
Cited
GB587280A
Cited
US2512568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |