Inventor
GELDERN STEVE VAN
US3 patents
Patents
3 patentsUS6470873B2Oct 29, 2002
System and method for establishing pitch parameters in a ball-throwing machine
PROBATTER SPORTS LLC49 citations94
US6186134B1Feb 13, 2001
Pitching system with video display means
PROBATTER SPORTS LLC27 citations90
US6186133B1Feb 13, 2001
System and method for establishing pitch parameters in a ball-throwing machine
PROBATTER SPORTS LLC12 citations71