YA

Yukio Aoyagi

HC Hitachi Construction Machinery Co.: 2 patents #3 of 51Top 6%
📍 Ibaraki, JP: #55 of 576 inventorsTop 10%
Overall (1994): #15,357 of 165,921Top 10%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5295795 Hydraulic drive system for construction machine Tomohiko Yasuda 1994-03-22
5277027 Hydraulic drive system with pressure compensting valve Tomohiko Yasuda 1994-01-11