Inventor

WEILACHER KARL HERMANN

DE2 patents

Patents

2 patents

US7552864B2Jun 30, 2009

Method for verifying the authenticity of documents

GIESECKE & DEVRIENT GMBH9 citations79

US8006898B2Aug 30, 2011

Method for verifying the authenticity of documents

GIESECKE & DEVRIENT GMBH6 citations68