Piotr Balcerzak

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North York, CA

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Patents Grantslast 30 patents

Information Patent Grant
System and method for establishing long distance call connections u...
- Patent number 6,694,007
- Issue date Feb 17, 2004
- Softalk Inc.
- Alexander C. Lang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
System and method for establishing long distance call connections u...
- Publication number 20020136390
- Publication date Sep 26, 2002
- Softalk Inc.
- Alexander C. Lang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE