Hervé Dardelet has been granted 2 US patents while listed as an inventor at Sagem Sa. The first was granted in 2003 and the most recent in March 2004. Hervé Dardelet ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Hervé Dardelet in Éragny-sur-Oise, FR.