About: http://webisa.webdatacommons.org/438295049

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	In another embodiment, the first waves define frequencies which are mainly one of less than about 1 kHz, between about 1 kHz and about 1 MHz, between about 1 MHz and about 1 GHz, higher than about 1 GHz, and so on.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com