This page has eight detailed diagrams of an invention by Peter V. Karpovich that locates the center of gravity in footwear. He filed the patent for this device on June 16, 1958 and was issued the patent, number 2,995,924, on August 15, 1961. For more information on Peter V. Karpovich, see: https://springfield.as.atlas-sys.com/agents/people/571
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