David Aas

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Maple Valley, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for message transmission verification
- Patent number 7,328,248
- Issue date Feb 5, 2008
- Cingular Wireless II, LLC
- David Aas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for message transmission verification
- Patent number 6,845,391
- Issue date Jan 18, 2005
- AT&T Wireless Services, Inc.
- David Aas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for message transmission verification
- Patent number 6,219,542
- Issue date Apr 17, 2001
- AT&T Corp.
- David Aas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for message transmission verification
- Patent number 5,940,740
- Issue date Aug 17, 1999
- AT&T Wireless Services, Inc.
- David Aas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Method and apparatus for message transmission verification
- Publication number 20050188033
- Publication date Aug 25, 2005
- David Aas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE