JF

Johannes A. Frankena

U.S. Philips: 1 patents #205 of 1,030Top 20%
📍 Drachten, NL: #7 of 12 inventorsTop 60%
Overall (1989): #95,478 of 140,708Top 70%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4866284 Irradiation device Jorrit Wijtsma, Marten F. Elkerbout 1989-09-12