Google honors Swedish-Americal engineer Gideon Sundback with a doodle of a zipper going down an embroidered Google logo.

In 1941, Otto Fredrik Gideon Sundback developed a version based on interlocking teeth, the “Hookless No. 2”. In this fastener each tooth is punched to have a dimple on its bottom and a nib or conical projection on its top. It is the modern metal zipper in all its essentials.