PowerAngle Tennis
The PowerAngle Racket design was inspired by a prior racket invention patented by Madeline Hauptman. She developed an innovative, three-directionally-strung racket based on the weave of a snowshoe. These rackets, called "MAD RAQ" (Madeline's Racquets), were used by professional tour players and are on permanent display in both the Wimbledon Lawn Tennis Museum in London, England and the Museum of the International Tennis Hall of Fame in Newport, Rhode Island.