Inventor

EHRICH SVEN

DE2 patents

Patents

2 patents

US7699153B2Apr 20, 2010

Method for identifying counterfeit banknotes

GIESECKE & DEVRIENT GMBH12 citations78

US7742154B2Jun 22, 2010

Method and device for testing valuable documents

GIESECKE & DEVRIENT GMBH3 citations58