Haruo Ichikawa

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Katsushika-ku, Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Interchangeable drum unit interchange system
- Patent number 4,887,529
- Issue date Dec 19, 1989
- Haruo Ichikawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Interchangeable drum unit type rotary printing machine
- Patent number 4,887,531
- Issue date Dec 19, 1989
- Miyakoshi Printing Machinery Co., Ltd.
- Haruo Ichikawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS