Inventor
HIRAI HIROTOMO
4 patents
Patents
4 patentsUS4017155AApr 12, 1977
Liquid crystal display device
SEIKO INSTR & ELECTRONICS41 citations90
US3984176AOct 5, 1976
Reflective plates for a liquid crystal display device
SEIKO INSTR & ELECTRONICS47 citations89
US4204205AMay 20, 1980
Electronic display device
SEIKO INSTR & ELECTRONICS29 citations79
US3978296AAug 31, 1976
Switching system for an electronic timepiece
SEIKO INSTR & ELECTRONICS24 citations78