About: http://webisa.webdatacommons.org/208253626

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	This invention provides an apparatus for effecting the installation and acurate angular orientation of the arcuate tool guiding face of a whipstock in a well conduit, such as casing.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com