A ball includes a bladder and a cover disposed over the bladder. The bladder is typically filled with air. The cover may be made of leather, rubber, or other material. One or more electrical components are positioned inside the ball.
申请公布号
US2011218065(A1)
申请公布日期
2011.09.08
申请号
US20100906003
申请日期
2010.10.15
申请人
CAVALLARO RICHARD H;BORTON JOHN ROY;RUSSELL GERALD
发明人
CAVALLARO RICHARD H.;BORTON JOHN ROY;RUSSELL GERALD
