Document with doped optical safety mark, stratified composite paper for producing the same and device for checking the authenticity of the document
A Standard patent application filed on 17 November 1993 credited to Fajmann, Peter
;
Berger, Erich
Details
Application number :
54118
Application type :
Standard
Application status :
SEALED
Under opposition :
No
Proceeding type :
Invention title :
Document with doped optical safety mark, stratified composite paper for producing the same and device for checking the authenticity of the document