Looking more like the Jupiter 2 than an electric skillet, this frying saucer, also known as a "Party Chef" was made by Cory appliances of Chicago in the 1950's.
It came with the original owner's manual.
Cory wasn't a familiar appliance name to me. They started out in the 1940's producing vacuum coffee makers, for which the owner of the company, Harvey Cory, held a patent for the glass filter rod shown in the ad below.
The space-age styled Party Chef was introduced in 1956.
An ad on the back of the owner's manual shows they had quite a line of appliances.
I'm surprised I've never seen them at sales before now.