OA

Osamu Akamatsu

NC Nippon Air Brake Co.: 2 patents #3 of 33Top 10%
Overall (1989): #19,000 of 140,708Top 15%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4811651 Spring brake cylinder Yasuhisa Hata 1989-03-14
4796513 Spring brake cylinder Yasuhisa Hata 1989-01-10