About: http://webisa.webdatacommons.org/131575196

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	Shields are positioned adjacent to each shelf to preclude access to the fastening elements.D'Amore in U.S. Pat. No. 4,733,840 teaches a security system for preventing theft of items such as typewriters and personal computers.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com