Kohichi Saito

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Kitaibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for operating vacuum cleaner
- Patent number 5,294,872
- Issue date Mar 15, 1994
- Hitachi, Ltd.
- Haruo Koharagi
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Motor control apparatus for an electric vacuum cleaner
- Patent number 5,166,585
- Issue date Nov 24, 1992
- Hitachi, Ltd.
- Haruo Koharagi
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Method and apparatus for operating vacuum cleaner
- Patent number 5,075,607
- Issue date Dec 24, 1991
- Hitachi, Ltd.
- Haruo Koharagi
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Method and apparatus for operating vacuum cleaner
- Patent number 4,983,895
- Issue date Jan 8, 1991
- Hitachi, Ltd.
- Haruo Koharagi
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Method and apparatus for operating vacuum cleaner
- Patent number 4,880,474
- Issue date Nov 14, 1989
- Hitachi, Ltd.
- Haruo Koharagi
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...