Patent Stories
History of the Green Yo-Yo
The history of the yo-yo from ancient Greece to the 1866 whirligig patent by Haven and Hettrick. Prints of the original U.S. patent available framed or unframed.
Learn moreThe history of the yo-yo from ancient Greece to the 1866 whirligig patent by Haven and Hettrick. Prints of the original U.S. patent available framed or unframed.
Learn more