YN

Yoshio Nagasaki

KC Kanda Tushin Kogyo Co.: 1 patents #4 of 19Top 25%
Overall (All Time): #4,015,066 of 4,157,543Top 100%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4517409 Method for checking function states in key telephone system — 1985-05-14