RT

Ryoichi Tanihata

NE Nec: 1 patents #7,889 of 14,502Top 55%
NC Nippon Electric Co.: 1 patents #251 of 792Top 35%
Overall (All Time): #2,343,951 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4682353 Key telephone system Masayoshi Inoue, Kenichiro Hirano 1987-07-21
4236049 Electronic key telephone system Tsunehiko Shimazawa, Yoshihisa Shibayama 1980-11-25