Ichizo Kakumu

SI Sintobrator: 2 patents #1 of 4Top 25%

Overall (1989): #25,270 of 140,708Top 20%

Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4839992	Polishing device	Takeo Ishida, Hiroshi Hagiwara	1989-06-20
4837979	Polishing device	Takao Ishida, Hiroshi Hagiwara	1989-06-13