HT

Harumichi Tsukada

DI Daicel Chemical Industries: 1 patents #476 of 893Top 55%
Overall (All Time): #3,770,317 of 4,157,543Top 95%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5413893 Optical information recording medium Etsuji Akimoto, Masahiro Tsumura 1995-05-09