Patent US2689565A successfully refreshed from Google Patents.
US2689565A
Expired / Lapsed
US
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Blood pump
Assignee: Individual
•
Filing: 1952-12-08
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Granted: 1954-09-21
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Expires: 1972-12-08
Abstract
No abstract record available.
Inventors
- 👤 Gobel Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:59
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/20; A61M60/247; A61M60/253; A61M60/258; A61M60/10; A61M60/104; A61M60/109; A61M60/30; A61M60/35; A61M60/36; A61M60/37; A61M60/80; A61M60/845; A61M60/851; A61M60/113; A61M60/855; A61M60/89; A61M60/892; Y; Y10; Y10S; Y10S128/00; Y10S128/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |