AT

Aritaka Tatsumi

HC Hitachi Cable: 2 patents #313 of 1,086Top 30%
📍 Ibaraki, JP: #3,280 of 6,779 inventorsTop 50%
Overall (All Time): #2,248,894 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
RE36194 Machine for forming spiral grooves in metal pipe inner surface — 1999-04-27
4373366 Machine for forming spiral grooves in metal pipe inner surface — 1983-02-15