One year later, a trademark for the name "cheeseburger" was awarded to Louis Ballast of the Humpty Dumpty Drive-In in Denver, Colorado. According to Steak 'n Shake archives, the restaurant's founder, Gus Belt, applied for a trademark on the word in the 1930s.

Inventor Legends. Many food historians credit 16-year-old Lionel Sternberger, who in 1924 decided to slap a slice of American cheese (what else?) onto a cooking hamburger at his father's Pasadena, California, sandwich shop, the Rite Spot. He liked it, and so did his dad, and thus the cheeseburger was born.

By 1790, American-made cheddars were being exported back to England. According to Robert Carlton Brown, author of The Complete Book of Cheese, what was known in America as yellow cheese or store cheese was known as American cheddar or Yankee cheddar back in England.

Traditional cheeseburgers are made from beef, which comes from cattle.