Inventor

NISHIYAMA HIROMI

JP3 patents

Patents

3 patents

US4872787AOct 10, 1989

Method of drilling printed circuit board

HITACHI SEIKO KK33 citations91

US5066171ANov 19, 1991

Method for drilling a printed circuit board

HITACHI SEIKO KK15 citations81

US4997319AMar 5, 1991

Apparatus for drilling a hole in a printed circuit board

HITACHI SEIKO KK10 citations72