David Z. Dytchkowskyj has been granted 7 US patents while listed as an inventor at Cmd. The first was granted in 2012 and the most recent in April 2019. David Z. Dytchkowskyj ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list David Z. Dytchkowskyj in Appleton, WI, US.