Inventor

OHGAMI KAZUHIKO

4 patents

Patents

4 patents

US4007364AFeb 8, 1977

Writing instrument with calculator

HOSIDEN ELECTRONICS CO69 citations91

US4128889ADec 5, 1978

Pen type electronic digital calculator

HOSIDEN ELECTRONICS CO44 citations89

US3949180AApr 6, 1976

Jack

HOSIDEN ELECTRONICS CO37 citations87

US4254488AMar 3, 1981

Analog electronic timepiece

HOSIDEN ELECTRONICS CO5 citations55