PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Another object of this invention is to eliminate index mechanisms for locating and orienting tools for formation of lateral well bores on the inside of the main well bore casing, which project inwardly to locate and orient the whipstock or other tools for drilling a lateral well, such that there is no internally projecting keys or members to be used for orienting and positioning a whipstock and th
http://www.w3.org/ns/prov#wasQuotedFrom
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