Inventor
FARFAN DANIEL JOSEPH
US3 patents
Patents
3 patentsUS5875231AFeb 23, 1999
Telephone call on hold service for a party placed on hold by another party
AG COMMUNICATION SYSTEMS109 citations91
US5946378AAug 31, 1999
Information on hold telephony service
AG COMMUNICATION SYSTEMS50 citations88
US5828735AOct 27, 1998
Games on hold telephony service
AG COMMUNICATION SYSTEMS27 citations88