Ryo Toyokuni

DS Daini Seikosha: 1 patents #11 of 50Top 25%

Overall (1982): #32,322 of 81,411Top 40%

Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4350961	Electronic timepiece	—	1982-09-21