Seiitj Sakuma

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Composite photosensitive material for use in electrophotography
- Patent number 4,521,504
- Issue date Jun 4, 1985
- Ricoh Company, Ltd.
- Seiitj Sakuma
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY