Accurate, multi-axis, computer-controlled object projection mach
Accurate, multi-axis, computer-controlled object projection...
Adjustable pitching platform
Anti-fouling compositions comprising N-phenylisothiazalone deriv
Automatic ball throwing device, directing device therefor...
Automatic ball throwing device, directing device therefor...
Automatic tennis ball feeding and serving apparatus
Ball expelling device
Ball launching apparatus
Ball launching apparatus
Ball pitching apparatus
Ball pitching apparatus—3
Ball pitching device
Ball pitching machine with selective adjustment between drive an
Ball projecting apparatus
Ball projecting apparatus
Ball projecting machine
Ball shooting machine for volleyball practice
Ball throwing and pitching machine feeder device
Ball throwing apparatus