Stephen Kovacs received a patent for a magnetic heart pump.
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| Number | Title | Issue Date |
| 4797965 | Wrench with rack and segment gear linkage A wrench of the type having two handle members pivotally connected to one another at a pivot point. Each handle member terminates in a jaw member. Advancing a screw member causes one of the handle members to rotate about the pivot point so that the jaw me... | 01/17/1989 |