MK

Mituaki Koyama

NC Nihon Dempa Kogyo Co.: 1 patents #180 of 296Top 65%
Overall (All Time): #3,467,636 of 4,157,543Top 85%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6680560 Heat resistant quartz-crystal unit Genwa Koki, Mikio Saito, Shigeru Obara 2004-01-20