YI

Youichi Ichioka

Mitsubishi Electric: 4 patents #7,099 of 25,717Top 30%
Overall (All Time): #1,304,004 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4724931 Group-supervisory apparatus for elevator — 1988-02-16
4690243 Elevator control apparatus — 1987-09-01
4685536 Elevator group supervision apparatus — 1987-08-11
4210226 Elevator control apparatus — 1980-07-01