James M. Grinn

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Plano, IL, US

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Patents Applicationslast 30 patents

Information Patent Application
Apparatus and method for prepaid charging of wireless packet data s...
- Publication number 20020133457
- Publication date Sep 19, 2002
- Charles Althoff Gerlach
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Apparatus and method for prepaid charging of coexistent wireless ci...
- Publication number 20020102962
- Publication date Aug 1, 2002
- James M. Grinn
- H04 - ELECTRIC COMMUNICATION TECHNIQUE