who was heated ice cream scoop invented by?

who was heated ice cream scoop invented by?
who was heated ice cream scoop invented by?

who was heated ice cream scoop invented by?
热冰激凌勺是由谁发明的?
这句话是病句,应该是
Who was the one heated ice cream scoop invented by?

应该是By whom was heated ice cream scoop invernted？