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Yoshiharu Yotsumoto

HI Hitachi: 1 patents #1,533 of 3,950Top 40%
Overall (2002): #84,557 of 266,432Top 35%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6495786 Vacuum exhaust element of vacuum switch Masashige Tsuji, Ayumu Morita, Toru Tanimizu, Katsunori Kojima, Yuichi Ishikawa 2002-12-17