US3468631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood oxygenator with heat exchanger
Assignee: American Hospital Supply Corp
•
Filing: 1965-06-21
•
Granted: 1969-09-23
•
Expires: 1985-06-21
Abstract
No abstract record available.
Inventors
- 👤 Donald A Raible
- 👤 Donald J Bentley
- 👤 Richard A De Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:39
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/32; A61M1/322; A61M1/325; A61M1/36; A61M1/3621; A61M1/3623
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2183509A
Cited
US2440245A
Cited
US3112746A
Cited
US3058464A
Cited
US3087490A
Cited
US3256883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |