AK

Akihiko Kawakami

Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
Overall (All Time): #3,988,306 of 4,157,543Top 100%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4563093 Voltage and electric field measuring device using light Kohji Tada, Yoshiki Kuhara, Masami Tatsumi 1986-01-07