http://www.asahi.com/national/update/0306/021.html
Referrer (Inside):
[2006-02-11-1] 日亜化学、青色 LED 特許権を放棄へ
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[2006-02-11-1] 日亜化学、青色 LED 特許権を放棄へ
http://www.asahi.com/national/update/0306/021.html