US3426744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart pump cannula
Assignee: RTX Corp
•
Filing: 1964-02-27
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Granted: 1969-02-11
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Expires: 1984-02-27
Abstract
No abstract record available.
Inventors
- 👤 Richard H Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:15
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/40; A61M60/497; A61M60/10; A61M60/122; A61M60/126; A61M60/135; A61M60/139; A61M60/20; A61M60/295; A61M60/80; A61M60/841; A61M60/855; A61M60/857; A61M25/00; A61M25/0043; A61M25/005; A61M60/247; A61M60/253; A61M60/268; A61M60/274
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) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |