LB

Ludger Bertels

EA E.I. Du Pont De Nemours And: 2 patents #2,942 of 8,010Top 40%
📍 Nottuln, DE: #22 of 58 inventorsTop 40%
Overall (All Time): #2,318,772 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5046677 Cassette for holding a roll Erhard Loewe 1991-09-10
4889292 Lightproof cassette Erhard Loewe 1989-12-26