Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Brian William Holmes0
Kenneth John Drinkwater0
Ralph Kay0
Date of Patent
May 30, 2006
0Patent Application Number
102572120
Date Filed
June 27, 2001
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An optically variable security device comprising a thin film reflection filter structure (23) which exhibits a first optically variable effect; and a relief structure (20) on or in the thin film reflection filter structure which exhibits a second optically variable effect.
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