RT

Ritsuko Takefuji

📍 Oshima, JP: #663 of 1,090 inventorsTop 65%
Overall (All Time): #3,911,859 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D310678 Key unit for a keyboard musical instrument Kanpei Takefuji 1990-09-18