Mr. Walker's association with Eureka began in 1939 as seen in that year's news blurb from ELECTRICAL WEEK: THE NATIONAL NEWS MAGAZINE OF APPLIANCE DISTRIBUTION, Vol. 1: "EUREKA GETS WALKER AS PRODUCT STYLIST DETROIT, Mich - The appointment of a consulting product stylist, the widely known George W. Walker, has been announced by Henry W. Burritt, president of the Eureka Vacuum Cleaner Co."
Here are his patents assigned to Eureka Williams that I located; not all were mass-produced: