David J. Hedberg has been granted 14 US patents while listed as an inventor at Acuson. The first was granted in 1984 and the most recent in July 2011. David J. Hedberg ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list David J. Hedberg in Rancho Palos Verdes, CA, US.