Former CEO of American Electric Power Dies at 94
Cars That Think
AUGUST 10, 2021
DeWitt downsized his operations after an economic recession hit the United States in 1975. During his career, he designed 14 patented electromechanical filters. He also wrote Mechanical Filters in Electronics , the first book in a series about the design, fabrication, and uses of filters. He closed the business in 2018.
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