Assignee
WHD ELECTRONISCHE PRUEFTECHNIK
DE·3 granted patents·20 citations·filing 2001–2006
Technology mixG07D3
Top patents by PatentIndex Score
3 records- 0177US7133124B2Security element structure for documents, devices for checking documents with such security elements, method of the use thereofWHD ELECTRONISCHE PRUEFTECHNIK·Filed 2003·Granted Nov 7, 2006·16 cites·8 claims
- 0258US7262604B2Method of testing documents provided with optico-diffractively effective markingsWHD ELECTRONISCHE PRUEFTECHNIK·Filed 2006·Granted Aug 28, 2007·1 cites·2 claims
- 0353US7129709B2Method of testing documents provided with optico-diffractively effective markingsWHD ELECTRONISCHE PRUEFTECHNIK·Filed 2001·Granted Oct 31, 2006·3 cites·6 claims
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