About: http://webisa.webdatacommons.org/266849167

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Another aspect of the invention is an apparatus connected to the tip line and the ring line of a telephone line, the telephone line being connected to a telephone and an auxiliary device is connected to the tip line and the ring line.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com