KH

Keiko Hioka

KC Konishiroku Photo Industry Co.: 1 patents #532 of 894Top 60%
Overall (All Time): #4,055,451 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4396683 Photomask blank provided with a transparent electro-conductive layer Takashi Hatano, Akira Maruyama 1983-08-02