Saburo Maru

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Large-depth underground drainage facility and method of running same
- Patent number 6,102,618
- Issue date Aug 15, 2000
- Hitachi, Ltd.
- Kunio Takada
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Large-depth underground drainage facility and method of running same
- Patent number 5,909,982
- Issue date Jun 8, 1999
- Hitachi, Ltd.
- Kunio Takada
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Underground drainage facility, vertical-shaft multi-stage adjustabl...
- Patent number 5,733,065
- Issue date Mar 31, 1998
- Hitachi, Ltd.
- Masayuki Yamada
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Large-depth underground drainage facility and method of running same
- Patent number 5,634,740
- Issue date Jun 3, 1997
- Hitachi, Ltd.
- Kunio Takada
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Underground drainage facility, vertical-shaft multi-stage adjustabl...
- Patent number 5,624,226
- Issue date Apr 29, 1997
- Hitachi, Ltd.
- Masayuki Yamada
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Large-depth underground drainage facility and method of running same
- Patent number 5,487,621
- Issue date Jan 30, 1996
- Hitachi, Ltd.
- Kunio Takada
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Underground drainage facility, vertical-shaft multi-stage adjustabl...
- Patent number 5,360,290
- Issue date Nov 1, 1994
- Hitachi, Ltd.
- Masayuki Yamada
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Saburo Maru

Person

Patents Grantslast 30 patents

Large-depth underground drainage facility and method of running same

Large-depth underground drainage facility and method of running same

Underground drainage facility, vertical-shaft multi-stage adjustabl...

Large-depth underground drainage facility and method of running same

Underground drainage facility, vertical-shaft multi-stage adjustabl...

Large-depth underground drainage facility and method of running same

Underground drainage facility, vertical-shaft multi-stage adjustabl...