HF

Helmut Fröhlich

EA E.I. Du Pont De Nemours And: 1 patents #169 of 718Top 25%
📍 Oelde, DE: #2 of 6 inventorsTop 35%
Overall (1994): #127,614 of 165,921Top 80%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5292622 Process for preparation of images on tonable light-sensitive layers Bernhard Metzger 1994-03-08