1
Alexander Jr Delbert S: Automatic electric baseball game. Small Business Administration, Hofgren Wegner Allen Stellman & McCord, February 5, 1974: US3790170 (16 worldwide citation)

A baseball game apparatus includes a defensive control unit with pitch selection switches manually controlled by a player serving as pitcher, and an offensive control unit with pitch anticipation switches on which a player serving as batter selects and swings at or passes an anticipated pitch. A mix ...


2
Alexander Jr Delbert S: Automatic electric baseball game. State National Bank, April 11, 1972: US3655189 (11 worldwide citation)

A baseball game apparatus includes a defensive control unit with pitch selection switches manually controlled by a player serving as pitcher, and an offensive control unit with pitch anticipation switches on which a player serving as batter selects and swings at or passes an anticipated pitch. A mix ...