MH

Masakatu Hayakawa

Ngk Spark Plug Co.: 1 patents #959 of 1,594Top 65%
Overall (All Time): #3,897,723 of 4,157,543Top 95%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4907330 Sintered body assembly formed from a plurality of independent compacts and method of producing same Shigeaki Akao, Mitsuyoshi Kawamura 1990-03-13