P
PatentIndex
Search
Landscape
Sign in
Inventor
BURG FREDERICK M
US
2 patents
Patents
2 patents
US6604129B2
Aug 5, 2003
Method and apparatus for a conference call mediation service
AT & T CORP
65 citations
93
US7177905B1
Feb 13, 2007
Method and apparatus for a conference call mediation service
AT & T CORP
21 citations
90