YF

Yoshiaki Fujita

NC Nippon Piston Ring Co.: 1 patents #2 of 7Top 30%
Overall (1989): #41,352 of 140,708Top 30%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4817420 Method and device for examination of a joint of a ultrasonic joint inspection device and method Takashi Kawaguchi, Satoshi Kawai 1989-04-04