Ryuji Murayama

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Yamagata-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Organic electroluminescent display with protective film and trapezo...
- Patent number 6,137,220
- Issue date Oct 24, 2000
- Tohoku Pioneer Electronic
- Kenichi Nagayama
- H01 - BASIC ELECTRIC ELEMENTS