About: http://webisa.webdatacommons.org/103790602

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	An object of the invention is to provide a system for detecting and warning of the absence of ice where considered desirable such as in food freezers, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com