Seiichi Miyagawa

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Nagareyama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Solid state corona discharger
- Patent number 4,626,876
- Issue date Dec 2, 1986
- Ricoh Company, Ltd.
- Seiichi Miyagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color image forming method
- Patent number 4,578,331
- Issue date Mar 25, 1986
- Ricoh Company, Ltd.
- Itsuo Ikeda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY