US Patent 7942609 Method and device for trenchless pipe laying
Patent 7942609 was granted and assigned to Herrenknecht on May, 2011 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
January 19, 2007
Date of Patent
May 17, 2011
Patent Application Number
12085332
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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