HH

Haruo Hamada

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Overall (All Time): #3,994,862 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4586194 Earphone characteristic measuring device Makoto Kohashi, Tanetoshi Miura, Kaoru Okabe 1986-04-29