US2854002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygenator
Assignee: University of Minnesota Twin Cities
•
Filing: 1957-04-22
•
Granted: 1958-09-30
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Expires: 1977-04-22
Abstract
No abstract record available.
Inventors
- 👤 Wall Richard A De
- 👤 Lillehei Clarence Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:24
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/32; A61M1/36; A61M1/3621; A61M1/3623; Y; Y10; Y10S; Y10S128/00; Y10S128/03; Y10S261/00; Y10S261/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2702034A
Cited
FR1103202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |