YH

Yoshiyuki Hirahata

AC Aiphone Co.: 1 patents #26 of 52Top 50%
Overall (All Time): #3,301,954 of 4,157,543Top 80%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7792259 Collective housing intercom system Seiya Yamakawa 2010-09-07