TK

Tsukasa Kawaoka

NP Nippon Telegraph And Telephone Public: 1 patents #297 of 842Top 40%
Overall (All Time): #4,005,512 of 4,157,543Top 100%
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Patent #TitleCo-InventorsDate
4625076 Signed document transmission system Tatsuaki Okamoto, Shoji Miyaguchi, Akira Shiraishi 1986-11-25