YF

Yoshitaka Fujikawa

Ngk Spark Plug Co.: 1 patents #959 of 1,594Top 65%
Overall (All Time): #3,657,475 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5939616 Knocking detecting sensor Yasuo Ito 1999-08-17