About: http://webisa.webdatacommons.org/47812911

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	FIG. 1 is a cross section of a typical prior art pneumatic gun, illustrating the use of dual function hammer which functions both as a hammer and as a recock piston.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com