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        "http://www.w3.org/ns/prov#value" : [ "BACKGROUND OF THE INVENTIONThe present invention relates to an improved racket weighting means and more particularly to a device for use with any existing racket having a shaft with a throat connected to a frame during warm-up, practice, or actual play in sports such as tennis, badminton, squash or the like to provide means for temporarily adding supplemental weight to the racket in order to devel" ] ,
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