Inventor
HAHN JEFFREY C
US3 patents
Patents
3 patentsUS5632483AMay 27, 1997
Blackjack scanner apparatus and method
PERIPHERAL DYNAMICS165 citations95
US4902880AFeb 20, 1990
Card reader system and method with printing and verification capability
PERIPHERAL DYNAMICS206 citations94
US4492855AJan 8, 1985
Badge reader with improved slide arrangement
PERIPHERAL DYNAMICS19 citations70