About: http://webisa.webdatacommons.org/337248872

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	My invention makes it possible to construct arch structures of any metal, wood or other material and give it the I shape cross section with simv ple and easy means.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com