About: http://webisa.webdatacommons.org/213199553

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	With reference to drawings, and particularly to FIG. 1, the invention is illustrated by way of example as including an oscillator 10, which provides sequentially occurring pulses at a predetermined frequency.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es