About: http://webisa.webdatacommons.org/49004674

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	signal whose frequency is a multiple of that of said signal received thereby, and second mixing means for mixing said output signal of said multiplier means with the output signal from said first
http://www.w3.org/ns/prov#wasQuotedFrom	google.com