Frank Thomas Jr.

Frank Thomas Jr., a 1941 mechanical engineering graduate, is credited with inventing the first patented soft-serve ice cream machine in 1938. He also played a role in developing a grill for flame-broiling hamburgers through his firm, General Equipment Company. Additionally, in 1954, Thomas founded the Burger Chef fast-food franchise, which operated more than 1,000 locations at its peak. He eventually sold the business to General Foods, which later sold it to Hardee’s.