YH

Yutaka Hirakawa

EB Ebara: 1 patents #49 of 140Top 35%
Overall (1997): #54,578 of 185,788Top 30%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5618167 Vacuum pump apparatus having peltier elements for cooling the motor & bearing housing and heating the outer housing Shun-ichi Aiyoshizawa, Toshiharu Nakazawa 1997-04-08