Shuji Ohira

Follow

Person

Tsukuba, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Hydraulic circuit control device of construction machinery
- Patent number 6,430,490
- Issue date Aug 6, 2002
- Hitachi Construction Machinery Co., Ltd.
- Hiroshi Watanabe
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING