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| Number | Title | Issue Date |
| 6860034 | Energy return sole for footwear An article of footwear having an upper, an outsole defining a ground engaging surface, and a sole disposed between the upper and the outsole. The sole includes an energy return system having a first rigid plate, a second rigid plate spaced a predetermined distance f... | 03/01/2005 |
| 5911197 | Canine training device A canine training device protects a helper's hand and arm while training a dog to bite and hold the arm of a human. The canine training device includes a sleeve which fits over the helper's arm and is shaped to correspond to the shape of the helper's fore... | 06/15/1999 |
| 4858338 | Kinetic energy returning shoe An insert for a shoe sole is provided which includes a strip made of an elastic material disposed between an outer sole portion and an upper sole portion of the sole of a shoe. The strip extends from the outer heel area of the shoe to the border of the la... | 08/22/1989 |
| 4599920 | Power grip insert A power grip insert attachable to a handled instrument or to a user's hand, with one side contoured to accommodate the handle shank to be gripped, and an opposing side contoured in accordance with the musculature of hand palm. The palmar surface area incl... | 07/15/1986 |
