Kazumasa Ishikawa

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Facsimile machine using cut sheets of paper
- Patent number 4,695,898
- Issue date Sep 22, 1987
- Ricoh Company, Ltd.
- Kazumasa Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Frequency characteristic adjusting circuit
- Patent number 4,336,501
- Issue date Jun 22, 1982
- Nippon Columbia Kabushiki Kaisha
- Kazumasa Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE