YH

Yoshio Hayama

Overall (All Time): #2,370,233 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D258899 Toy piano Sozen Uozumi, Fumiyuki Kurita 1981-04-14
D255370 Toy piano Humiuki Kurita, Sozen Uozumi 1980-06-10