Demonstrative apparatus having air-cushioned movable disks
Demountable practice device attachable to the strings of a strin
Depressurized tethered tennis ball training device
Destructible toy aircraft game
Detachable golf putter extension
Detachable hockey trainer
Detachable netting for basketball goal
Detachable puck dispensing apparatus and method for hockey stick
Detector system for object movement in a game
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