Patent US3513845A successfully refreshed from Google Patents.
US3513845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bypass heart pump and oxygenator system
Assignee: RTX Corp
•
Filing: 1966-09-15
•
Granted: 1970-05-26
•
Expires: 1986-09-15
Abstract
No abstract record available.
Inventors
- 👤 Merrill G Chesnut
- 👤 Phillip B Callaghan
- 👤 Sven Gafvert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:36
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/36; A61M1/3621; A61M60/00; A61M60/10; A61M60/104; A61M60/109; A61M60/113; A61M60/20; A61M60/247; A61M60/253; A61M60/258; A61M60/268; A61M60/279; A61M60/30; A61M60/36; A61M60/38; A61M60/40; A61M60/424; A61M60/427; A61M60/50; A61M60/508; A61M60/515; A61M60/562; A61M60/80; A61M60/855; A61M60/89; A61M60/894; A61M1/14; A61M1/32; A61M2205/00; A61M2205/33; A61M2205/3303; A61M60/432; A61M60/892
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |