Inventor

AAS DAVID

US4 patents

⚠️ This page may combine multiple inventors who share the name “AAS DAVID”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

AT & T WIRELESS SERVICES INC

2 patents

US5940740AAug 17, 1999

Method and apparatus for message transmission verification

AT & T WIRELESS SERVICES INC70 citations94

US6845391B1Jan 18, 2005

Method and apparatus for message transmission verification

AT & T WIRELESS SERVICES INC5 citations72

AT & T CORP

1 patent

US6219542B1Apr 17, 2001

Method and apparatus for message transmission verification

AT & T CORP34 citations94

CINGULAR WIRELESS II LLC

1 patent

US7328248B2Feb 5, 2008

Method and apparatus for message transmission verification

CINGULAR WIRELESS II LLC0 citations50