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For the Inventor, By the Inventor

Dresden, Germany

Whd Electronische Prueftechnik


USPTO Granted Patents = 3

Forward Citations = 12

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1 inventor (with patents filed for the assignee):

goldMedal Frank Puttkammer (3 out of 9 patents)


3 patents:

1. 7262604 - Method of testing documents provided with optico-diffractively effective markings (2007-08-28),
2. 7133124 - Security element structure for documents, devices for checking documents with such security elements, method of the use thereof (2006-11-07),
3. 7129709 - Method of testing documents provided with optico-diffractively effective markings (2006-10-31),
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USPTO Data Jan 1 1976 - Jan 20 2026

3 Patents

#78 in Dresden

#8,294 in Germany

Dresden, DE
Dresden, Germany

Whd Electronische Prueftechnik

Forward Citations = 12

1 inventor:

goldMedal Frank Puttkammer (3 out of 9 patents)

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