Ortwin Aichmann

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Patents Grantslast 30 patents

Information 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
Information 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