Patent US2543581A successfully refreshed from Google Patents.
US2543581A
Expired / Lapsed
US
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Infusion device
Assignee: Individual
•
Filing: 1946-02-20
•
Granted: 1951-02-27
•
Expires: 1966-02-20
Abstract
No abstract record available.
Inventors
- 👤 Koski Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:08
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/06; A47J31/44; A47J31/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US35747A
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US1316154A
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US797478A
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GB190714342A
Cited
US1167259A
Cited
US1713836A
Cited
US1891826A
Cited
US1953291A
Cited
US2245389A
Cited
US2345876A
Cited
US2292504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |