article 19 - ownership of documents. contractor agrees that all tracings. designs , drawings , field notes , requisitions , purchase orders , specifications , computer programs (data files and other software in whatever form) and other documents or records ("documents")developed by contractor in connection with any order shall be the sole property of company . contractor shall provide the original and all copies of the documents to company when services are completed or earlier upon company written request. contractor may , with the prior written approval of company , retain one archival copy of documents . contractor shall keep any approved archival copy confidential and shall not use it directly or indirectly in providing any services to any other person or entity or for any other purpose without first obtaining company's prior written permission. contractor hereby assigns, and shall require its employees to assign,the copyright in all documents to company