YF

Yvan A. R. Frey

📍 Mons, BE: #44 of 102 inventorsTop 45%
Overall (All Time): #4,051,249 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4381922 Combustion detecting device using metallo-phthalocynine semiconductor and process of preparing same André De Haan 1983-05-03