Dave's Online Yo-Yo Museum Yo-Yo Exhibit (Part One) Yo-Yo Exhibit (Part Two) Yo-Yo Memorabilia (Part One) Yo-Yo Memorabilia (Part Two) Yo-Yo Mysteries U.S. Yo-Yo Patents U.S. Yo-Yo Design Patents (Patent Files Require a PDF Viewer like Adobe Acrobat) Download Library This page was created by: David W. Hall, "The Yo-Yo Collector" E-mail : whistler42@swcp.com Dave's Wonderful World of Yo-Yos, and All Parts Within © Copyright David W. Hall 1996-2016. All Rights Reserved. Web Site Images and Materials May Not Be Used Without Express Permission. Duncan's Mr. Yo-Yo & Other Copyrighted Trademarks Appear Courtesy of Duncan Toys, A Division of Flambeau Plastics