US3428042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart pump actuator
Assignee: RTX Corp
•
Filing: 1964-08-10
•
Granted: 1969-02-18
•
Expires: 1984-08-10
Abstract
No abstract record available.
Inventors
- 👤 Merrill Gaines Chesnut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:02
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/10; A61M60/104; A61M60/117; A61M60/40; A61M60/424; A61M60/438; A61M60/449; A61M60/50; A61M60/508; A61M60/515; A61M2205/00; A61M2205/33; A61M2205/3303; A61M60/427; A61M60/432
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US799064A
Cited
GB292203A
Cited
US2725078A
Cited
US3099260A
Cited
US3162134A
Cited
US3233687A
Cited
US3266487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |