Inventor

RITCHIE STEVE

US4 patents

Patents

4 patents

US5350174ASep 27, 1994

Below the playfield ball delivery system for a pinball game

WILLIAMS ELECTRONICS GAMES INC121 citations95

US5415403AMay 16, 1995

Magnetic ball lock for a pinball game

WILLIAMS ELECTRONICS GAMES INC123 citations93

US5186462AFeb 16, 1993

Oscillating ball cannon

WILLIAMS ELECTRONICS GAMES INC11 citations71

US5536082AJul 16, 1996

Game playfield mounting system

WILLIAMS ELECTRONICS GAMES INC10 citations67