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Ortwin Aichmann
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Horbranz, AT
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last 30 patents
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Patent Grant
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Patent number
6,398,273
Issue date
Jun 4, 2002
Stoba AG
Ortwin Aichmann
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Patent Grant
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Patent number
6,328,356
Issue date
Dec 11, 2001
Stoba AG
Ortwin Aichmann
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS