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TERPSTRA RICHARD
US
3 patents
Top patents
by PatentIndex Score
US8401161B2
Mar 19, 2013
Routing outbound toll-free calls through a VoIP network
TERPSTRA RICHARD
42 citations
90
US8520668B2
Aug 27, 2013
Geographic trunk groups
TERPSTRA RICHARD
6 citations
81
US8520667B2
Aug 27, 2013
Internet protocol trunk groups
TERPSTRA RICHARD
2 citations
60