Detector system for object movement in a game

Device and method for detection of the shots on a target from a

Device and method for exchange of trading cards and dice

Device and method for measuring the velocity and zonal position

Device for accommodating billiard balls in spaces provided for b

Device for adjusting the diameter of bowling ball holes

Device for arm wrestling

Device for automatically evaluating the ball throwing efficiency

Device for batting and striking practice

Device for batting and striking practice

Device for carrying the grab in slot machine cabinets

Device for catching a ball

Device for catching and throwing an aerodynamic disc

Device for facilitating application of variable tension to sport

Device for holding chalk for application to tips of pool cues

Device for instruction in the game of bridge and method of and d

Device for intercepting and deflecting a moving body

Device for locating the position of impact of a projectile

Device for measuring swing data of baseball bat

Device for preventing tennis elbow