Iwan Nussbaumer

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Liesberg-Dorf, CH

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Patents Grantslast 30 patents

Information Patent Grant
Method for monitoring and checking subscriber connections to ISDN
- Patent number 6,370,122
- Issue date Apr 9, 2002
- Siemens Schweiz AG
- Iwan Nussbaumer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE