Dart target with a function of displaying scores

Darts scoreboard

Data display system and method for an object traversing a...

Device for detecting net faults in tennis

Differential score indicator system for basketball

Directional motion instrumentation system

Display apparatus for basketball

Down marker indicator for football competition

Electric cribbage board with common hand count display and selec

Electric indicator system for ball games

Electronic apparatus for providing player performance feedback

Electronic cribbage board

Electronic dart game scoreboard

Electronic goal detector

Electronic monitoring of ground contact by an athlete's shoes

Electronic personal assistant device for soccer game official

Electronic scoring apparatus for dart games

Electronic tennis scoring system

Electronic timing and recording apparatus

Electronically operable game scoring apparatus