Constituting security elements with optical diffraction effect, and device for controlling such elements
A Standard patent application filed on 24 April 1998 credited to Wolf, Torsten
;
Puttkammer, Frank
Details
Application number :
82081
Application type :
Standard
Application status :
LAPSED
Under opposition :
No
Proceeding type :
Invention title :
Constituting security elements with optical diffraction effect, and device for controlling such elements