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Powers Al: Soft and securely held shoe. Nippon Rubber USA, October 30, 1973: US3768182 (36 worldwide citation)

An athletic shoe designed for wear without stockings, which avoids discontinuities where the shoe is tight against the foot, which permits considerable expansion to accommodate a range of widths and arch heights, but which firmly encircles the foot for a tight fit that is desired in athletic shoe we ...


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