Inventor
KOLKER MICHAEL E
US5 patents
Patents
5 patentsUS6718028B2Apr 6, 2004
System and method for forwarding call from disconnected telephone number to new telephone number
SBC TECHN RES INC32 citations95
US6442259B2Aug 27, 2002
System and method for forwarding call from disconnected telephone number to new telephone number
SBC TECHN RES INC36 citations95
US6304641B1Oct 16, 2001
System and method for forwarding call from disconnected telephone number to new telephone number
SBC TECHN RES INC35 citations95
US6088433AJul 11, 2000
System and method for forwarding call from disconnected telephone number to new telephone number
SBC TECHN RES INC31 citations92
US7206398B2Apr 17, 2007
System and method for forwarding call from disconnected telephone number to new telephone number
SBC TECHN RES INC3 citations62