Hironao Ishikawa

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Patents Grantslast 30 patents

Information Patent Grant
Front device
- Patent number 7,448,841
- Issue date Nov 11, 2008
- Hitachi Construction Machinery Co., Ltd.
- Hironao Ishikawa
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

Information Patent Application
Front device
- Publication number 20070124963
- Publication date Jun 7, 2007
- Hironao Ishikawa
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING