HY

Hirakazu Yokota

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Overall (All Time): #4,096,438 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4288677 Welding method of turbine diaphragm Shinji Sakata, Tasuku Shimizu, Yasuhiko Otawara 1981-09-08