About: http://webisa.webdatacommons.org/212824052

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	Front cover 36, rear cover 38, spool 40, spring 42, and clip 46 may be manufactured from a metallic or polymeric material, such as steel, aluminum, plastic, nylon, or acetal.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com