Showing 1 - 2 results of 2 for search 'Puttkammer, Frank'
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  1. 1
    Optický variabilný bezpečnostný prvok /
    by Puttkammer, Frank
    Published 2007
    Patent

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  2. 2
    Spôsob a zariadenia na kontrolu chránených dokumentov /
    by Puttkammer, Frank
    Published 2004
    Book

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