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Yasuko Yajima

MC Meisei Electric Co.: 5 patents #3 of 31Top 10%
Overall (All Time): #1,062,364 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
D310076 Telephone Shigeaki Kido, Sadao Isozaki 1990-08-21
D304564 Attendant telephone switchboard Shigeaki Kido, Sadao Isozaki 1989-11-14
D303801 Direct station telephone selector Shigeaki Kido, Sadao Isozaki 1989-10-03
D300029 Direct station telephone selector stand Shigeaki Kido, Sadao Isozaki 1989-02-28
D299134 Telephone apparatus with speakerphone and display panel Shigeaki Kido, Sadao Isozaki 1988-12-27