MA

Masahiro Azumi

DC Dowa Mining Co.: 1 patents #157 of 324Top 50%
Overall (All Time): #3,839,226 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5268040 Method for steel surface hardening treatment and an apparatus therefor Takeshi Naito 1993-12-07