Helmut Stolz

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Siegen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process and device for transmitting confidential connection establi...
- Patent number 6,708,275
- Issue date Mar 16, 2004
- Deutsche Telekom
- Helmut Stolz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Process and device for authenticating subscribers to digital exchanges
- Patent number 6,317,830
- Issue date Nov 13, 2001
- Deutsche Telekom AG
- Helmut Stolz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE