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Inventor
ZORN NATHAN
US
2 patents
Patents
2 patents
US9015155B2
Apr 21, 2015
Multi-user communication system and method
LEVINSON STUART J
7 citations
76
US10460290B2
Oct 29, 2019
System and method for establishing presence in a brokered chat system
LEVINSON STUART J
0 citations
34