SK

Syu Kumagai

AC Aiphone Co.: 2 patents #18 of 52Top 35%
Overall (All Time): #1,908,191 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10659617 Building controller and interphone system Kenji Yasukawa 2020-05-19
10469669 Intercom system Seiya Yamakawa, Akira Kai 2019-11-05