178545 ⎘
Holographic processes or apparatus using light, infra-red or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto; Details of features involved during the holographic process; Replication of holograms without interference recording; Replicating a master hologram without interference recording by masking
Hologram printing method and apparatus using mask
#2OPTICAL DEVICES FOR AUTHENTICATION AND METHODS OF MAKING SAME
#3Tool surface nano-structure patterning process
#4Display article
#5Method of producing diffractive structures in security documents
#6Methods of producing diffractive structures in security documents
#7Holographic data recording apparatus and method