Masakazu Umeda

Sumitomo Electric Industries: 1 patents #603 of 2,038Top 30%

📍 Moriyama, JP: #36 of 169 inventorsTop 25%

Overall (1997): #106,229 of 185,788Top 60%

Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
D387517	Electric vacuum cleaner	Toru Abe	1997-12-09