TK

Tetsuo Kitabayashi

Ngk Spark Plug Co.: 1 patents #32 of 139Top 25%
Overall (2021): #237,912 of 548,734Top 45%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11043401 Ceramic member Toshiya Umeki 2021-06-22