Walter Keller is a mathematician, physicist, researcher, designer, and inventor. He designed and holds the patent on the first implantable atrial synchronous heart pacemaker; he designed a demand circuit critical to the controls of the artificial heart; and he pioneered the first remotely programmable computer implantable prosthesis.
- "A Few of the Many Electrical Engineering Graduates Who Have Made a Difference". University of Arkansas, Department of Electrical Engineering. Retrieved December 9, 2010.
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