US3493347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood oxygenator
Assignee: HAZEN F EVERETT
•
Filing: 1967-12-12
•
Granted: 1970-02-03
•
Expires: 1987-12-12
Abstract
No abstract record available.
Inventors
- 👤 Hazen F Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:29
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/32; A61M1/36; A61M1/3621; A61M1/3623; Y; Y10; Y10S; Y10S261/00; Y10S261/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3070092A
Cited
US3211148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |